Soooo close on the explanation. I know it's nit-picky but you did such a good job explaining the technical details of dew and then at 3:04 you said "...is essentially evaporating that water back out into the air and away from the telescope." The dew-heater is kind of like the reverse of gravity in a local galactic cluster fighting against the expansion of spacetime due to dark energy. ;). The dew heater prevents the "sponge" of air near the telescope objective from contracting enough to squeeze out water in the first place - it doesn't actually let the moisture in the air get squeezed out and phase-changed into liquid water and then evaporate it - instead it keeps the area around and on the objective/corrector plate/etc. warm enough to prevent the water vapor from turning into microscopic water droplets in the first place. Like I said, nit-picky. Thanks for the entertaining and informative videos!
@@DylanODonnell yep, it’ll evaporate. But hopefully you’ve remembered to turn on your dew heater before the dew forms. I say hopefully because, well, let’s just say that I have woken up to a bunch of soft fuzzy subs once before. 😆
A bit more knowall comment... It is the so-called sky temperature, the sky absorbs radiation from surfaces and cool them below the dewpoint before water can even condense in the air(no water droplets)
@@backgammonbacon Are you aware that he was talking about thinking in both systems? As a Canadian raised within 15 minutes of the border, I do the same. You arrogant prick…
Love the sponge analogy!... One minor point, metal and glass radiate heat out into space. They become colder at night as compared to air and other stuff nearby hence attracting condensation/dew...
The 8" dew heater fits on a Meade LX200 8" SCT too. I took a chance, bought one, and the holes all lined up perfectly. Although I used the original ring screws, it really needs slightly longer screws 1mm longer or so. I just do not know the thread size to replace them with longer screws.
So Celestron being Celestron, it looks like if you run in stand alone mode without their controller, you connect a 12V supply and it runs flat out. If you want to control the amount of heat you have to connect the thermistor to their controller which controls the resistance and regulates the current through the heater. Almost all other dew prevention straps out there use PWM signals to modulate the heat. I’m not sure if a PWM third party controller will work with this device, maybe it will. But yet again it looks to me like Celestron have gone and made something proprietary that could have easily been compatible with other gear. Many people wanting this would have already had a PWM dew controller, but no, Celestron wants you to shell out for their control box and download PWI just to use the dew heater. Correct me if I’m wrong, I would be happy to be mistaken.
I think you can use other dew controllers :) I don’t think their controller is ascom neutral though. So you’re half right .. I think.. definitely maybe.
Great product, wish this was about when I had my 8SE. So many nights ruined and ended up selling it due to dew. Also huge congrats on your recent academic achievement.
Hey Dylan, great as always. A bunch of chaps of CN seem to be concerned about reflections from the copper heater strip on the dew ring. What's you thought on it? If any. I'm thinking its a non-issue. One note of caution if someone is using the dew ring at full power without a variable controller, it can cause some thermal artifacts (like spikes on stars). Best to have some control over the process. PS, wish I had enough hair to make it worthwhile for someone to offer me beer not to cut it. Cheers, Jason
Can you share details of the all-sky camera setup? You mentioned the actual camera, but what about the white base, clear dome etc. is that some kind of kit?
"The thing with Dylan... it's like the sun shines on you, and it's glorious. And then he forgets you and it's very, very cold." 😆 Abusive relationship, indeed. Congrats on the new gear, the Allsky rig looks cool! Beer == good.
I came across an awsome Canon lens. 400mm f4 DO. Unlike the very heavy 400 f4 your thinking of, this lens uses diffraction optics, DO, using a fresnel lens. This ligtens the lens to only 4.6 pounds , under 2.1 kg (for the rest of the world, haHa). It's very sharp, short, for good balance. A lot of people use rhe Tamron 150-600. That's the same weight, but much longer and slower. This lens can also be had in an earlier version Relatively cheep. Since you brought up Canon glass, thought I'd mention this.
Ooohh. I was curious about this too. I use a UPBv2 and astrozap dew sheild + heater. But Ihave to deal with clearance on my dome door. Still, I'm probably going to keep the shield on, but trim it down a little bit as it helps with the stray light. I think this helps me decide to get the dew ring. Thank you both!!!
Thanks for the repport Dylan. I´m seriously thinking about buying one for my C11" HD. But I have two doubts. 1. It´s less efficient, but could I just power and control it through ASIAIR plus, at 50% pwr for instance? 2. Is it adecuate for Hyperstar ? (possibly my next evolution) Thanks in advance.
In your opinion do you think a heated sew shield vs the heated ring would be advantageous for keeping out unwanted light pollution vs no shield heating? I’m curious as I only had a pier (no dome) in the back yard here in brissy with my edge 8?
I’ll always use a dew shield for light pollution .. but now I’ll run the dew ring too for when I’m shooting at the zenith and dew can still fall down onto the ota :)
@@DylanODonnell thanks for the quick reply. Yeah, I’m a high school astronomy teacher and was looking for a under $500 option but can’t find one. Thank you though and keep up the great work!
Great video as always.. I live in such a dry desert (Phoenix, Arizona) that I have only seen dew 2.. maybe 3 times and that was from me cooling my camera to quickly I think that was over this last "winter. I dread the day I have to fight dew.. I will be ill prepared
Just wondered, given that the ring evaporates any moisture, in the evaporation process is there anyway of capturing, distilling, fermenting said vapour therefore combining two of the best hobbies ever?
So do these few heaters have to be controlled by the celestron app and controller ? I’ve recently ordered a edge hd 8 and one of these dew heater rings and just assumed that an asi air pro could control it
Would you be able to use this with an ASIAIR setup? Dew is rarely a problem living in Southern California but would be nice to future proof if I were to travel to a dew heavy location. Thanks!!
@@DylanODonnell I know you aren’t the traveling astrophotographer type but you should give the ASIAIR setup a go. Pretty sweet pairing especially with the RASA.
I recently bought an Edge HD 14" with .7X reducer. Would you recommend a particular camera for this telescope. I prefer mono but will use OSC with duo narrow band or tri-band filters if necessary. Thank you.
Hi Dylan, what does the back side of that new dew heater ring look like? The side that touches the corrector plate where you removed the stock pads. Thanks!
@@DylanODonnell I guess the coating is to replace the gasket? I was thinking why didn't they just make the ring sit over top of the original ring and heat it as a stack. I made a dew ring out of resistors 22 years ago for my 8" and just velcro'd it around that inner diameter against the ring and it worked well. BTW is this ring supposed to 'replace' a light shield, which still has benefits for those of us not in observatories?
I got the dew heater ring for my C5, and then realized that I couldn't close the lid without stashing the cables on the inner clips. Do you think fiddling with those cables every time I setup the rig would damage them eventually? Would it make sense to cut a notch into the lid so that it can be places with the cables on the outer clip?
I think unclipping the cables is definitely safer than cutting the OTA... you don't want any more dust/filings in the OTA (which the screw holes already produce)
@@DylanODonnell Haha, yeah I totally agree! But I was thinking in cutting the plastic lid instead of the OTA. At least on the C5, I cannot place the lid with those pesky cables going out :)
Does it work well enough to spend the money to get it imported from the US at a ridiculous charge as you know who doesn't have any stock? I live in Canberra and most of the winter is 99% humidity after sunset.
I've had such trouble with my Cgem ii mount , I've given up on it and given up on Celestron. on hold for hours, no response to my emails, in a year I've had one return email asking for my proof of purchase. I sent that and months later still nothing. I cant wait for my cem70 to arrive and take my cgem to the dump.. anyways I love your channel and the content you put out, informative and fun. keep up the good work
I'm guessing the reason it's sold out is that it all came to you. Of course, that makes me wonder what the Monks up there must be thinking, having it all shipped to the same address in Byron Bay! Okay, serious question. When you install the dew heater, do you get any collimation issues?
@@DylanODonnell haha possibly. I always say it's better to be part of a minority group. Not doing anything wrong. You are being real. I guess that's worth more than subs...maybe 🚀🔭
Would this allow me to get away without using a dew shield? My only complaint with a dew shield is it's effect on guiding when it's just a little breezy outside. My 4" refractor doesn't have much of a problem with the wind, But my 8" Edge HD does. So if I can get away without the need for a dew shield, then it's just a matter of balancing the DEC properly. Does anyone know why you might NOT want to do this? :O)
Nice one lads, I don't think he's realised we're trying to give him alcohol poisoning. Good video chief. Only thing other than round stars guaranteed to get astronomers wet is no dew and graphs.
Yeah, there's a screw loose alright... I have to agree that particular Canon lens is one of the greatest I have ever used. The clarity, functionality just work well. It is a bit heavy, thus the reason for the lens mount clip. We used this to take photos of the Venus transit in 2015 or 2016. Enjoy!
I was given one of these lenses by a veterinarian friend of mine. It had been dropped, and the zoom was a bit stiff as a result. I sent the lens to Canon and had it completely overhauled with a new 2-year warranty for US$600. Best photo money I ever spent. Steve
Tardigrades are the spice of life and add flavor to your images via dew-rain. These things are true Sir. Embrace the philosophy of the Tardigrade and watch your images transition into the microscopic world...oh it's true.
I don't even have a Celestron telescope, I only came here to see you bald or extremely drunk on Abbey Ale. I liked the Celsius / Fahrenheit rip so you redeemed yourself there haha 😂
I left a comment, but it got removed... I guess the algorithm didn't allow me to post a closing tag I added as a joke (it must've ended up in your "Held for review" section). Oh well, nice video again Dylan!
Close enough on the explanation. However, you're saying that the moisture forms a fog in the air which then drops onto the lens, which only happens in *really* dire situations, and no dew heater will save you then. No, what actually happens is that the lens itself cools down to a temperature that is cooler than the air surrounding it, and indeed cooler than the dew point for the amount of moisture in the air. It does this, because it has a nice cloud-free view of space, and space is cold, so it is radiatively connected to the cold of space. Then, while the air is still above dew point, your cold lens, which is now below dew point, will get that moisture condensing on it. The dew heater is there to heat up the glass, not the air.
Better solution live somewhere with dew maybe noticeable 3 or 4 times in last year😛 Welcome to Spain!! Shame about the cloudy nights and light pollution.
Water vapour. Water vapour is a gas. It doesn't need to be over 100° to exist. We can observe it when we boil a kettle and it condenses back into water droplets we see as steam, but there will be a clear area above the spout where we have water vapour. It's hot then but exists all the time, even sublimating off ice. An interesting way of observing how atmospheric water vapour behaves is to time lapse clouds to see them cycling between clear water vapour and visible water droplets. Of course what gives water vapour its ultimate fulfilment and purpose is condensing out onto my telescope.
You are lucky. The PO steals everything of value I ship right down to birthday cards thought to contain money, but do not. I now do funds transfer and am thinking of electronic cards..
That is not exactly how dew formation happens. Objects emit infrared radiation and get colder when exposed to the sky. Is not that the drops fall from up. You can see this effect when dew forms on a car surface. The roof gets colder faster than other surfaces. Also in a field you can see that dew forms on the grass but not when there is a tree nearby. The tree is emiting enough ir radiation to keep the grass nearby to cool too much. If you have a long dew shield you still can have dew even if there is no vertical line from the lens to the sky.
Not accurate. Dew is an external process that isn't addressed by the OTA sitting around exposed. The OTA drops to 'ambient' temperature, dew is attracted to surfaces at ambient. A dew ring brings to corrector up to above ambient by 1 degree keeping that 'sponge' effect from occur on the corrector... however the OTA exterior will still dew up.
Cheers 🍻 good Sir!!
I hope you got yourself a few too! *clicks bottle with yours*
I am supposed to be studying for my finals tomorrow but a new video from Dylan is far more entertaining and will be consumed now
I hope your finals have a question on Celestron dew control.
Soooo close on the explanation. I know it's nit-picky but you did such a good job explaining the technical details of dew and then at 3:04 you said "...is essentially evaporating that water back out into the air and away from the telescope." The dew-heater is kind of like the reverse of gravity in a local galactic cluster fighting against the expansion of spacetime due to dark energy. ;). The dew heater prevents the "sponge" of air near the telescope objective from contracting enough to squeeze out water in the first place - it doesn't actually let the moisture in the air get squeezed out and phase-changed into liquid water and then evaporate it - instead it keeps the area around and on the objective/corrector plate/etc. warm enough to prevent the water vapor from turning into microscopic water droplets in the first place.
Like I said, nit-picky. Thanks for the entertaining and informative videos!
Well if you let it get cold, form dew, and then heat it it will in fact evaporate...
Good point! Thought experiment .. when there IS dew on the glass and then you turn the heater on.. does it not evaporate ?
@@DylanODonnell yep, it’ll evaporate. But hopefully you’ve remembered to turn on your dew heater before the dew forms. I say hopefully because, well, let’s just say that I have woken up to a bunch of soft fuzzy subs once before. 😆
@@DylanODonnell was that a nit on the nitpicker?
A bit more knowall comment... It is the so-called sky temperature, the sky absorbs radiation from surfaces and cool them below the dewpoint before water can even condense in the air(no water droplets)
"Romantic soft focus" got me in stitches. Great new intro too
Hey! As an American who was raised on the metric system in 1970’s, I still think in meters, liters and Celsius!
Legend!
cubic decimeter not liter, liter is technically not part of the metric system so still some learning to do.
@@backgammonbacon Are you aware that he was talking about thinking in both systems? As a Canadian raised within 15 minutes of the border, I do the same. You arrogant prick…
I‘ll raise a 0,08717 gallon of beer to that. Cheers! 😀
That may be, but you still spell metres and litres wrongly.
Love the sponge analogy!...
One minor point, metal and glass radiate heat out into space. They become colder at night as compared to air and other stuff nearby hence attracting condensation/dew...
This is amazing. Do we still need the Dew Shield if we used this?
In theory .. no .. but I still use it as it’s a great way to avoid light leaks from the side
The 8" dew heater fits on a Meade LX200 8" SCT too. I took a chance, bought one, and the holes all lined up perfectly. Although I used the original ring screws, it really needs slightly longer screws 1mm longer or so. I just do not know the thread size to replace them with longer screws.
So Celestron being Celestron, it looks like if you run in stand alone mode without their controller, you connect a 12V supply and it runs flat out. If you want to control the amount of heat you have to connect the thermistor to their controller which controls the resistance and regulates the current through the heater.
Almost all other dew prevention straps out there use PWM signals to modulate the heat.
I’m not sure if a PWM third party controller will work with this device, maybe it will. But yet again it looks to me like Celestron have gone and made something proprietary that could have easily been compatible with other gear. Many people wanting this would have already had a PWM dew controller, but no, Celestron wants you to shell out for their control box and download PWI just to use the dew heater.
Correct me if I’m wrong, I would be happy to be mistaken.
I think you can use other dew controllers :) I don’t think their controller is ascom neutral though. So you’re half right .. I think.. definitely maybe.
Great product, wish this was about when I had my 8SE. So many nights ruined and ended up selling it due to dew.
Also huge congrats on your recent academic achievement.
Thanks mate !
With all that beer your definitely gunna make visual astronomy EXCITING!!!!!!!!!!!!!!!😁😁😁😁🤩
Sheesh, I thought I was going to have to do my own thinking to install this thing. Thank you for saving me that nightmare.
Hehe no worries! Mine are still going strong !
The beer was the highlight of this one!
Hey Dylan, great as always.
A bunch of chaps of CN seem to be concerned about reflections from the copper heater strip on the dew ring. What's you thought on it? If any. I'm thinking its a non-issue.
One note of caution if someone is using the dew ring at full power without a variable controller, it can cause some thermal artifacts (like spikes on stars). Best to have some control over the process.
PS, wish I had enough hair to make it worthwhile for someone to offer me beer not to cut it.
Cheers,
Jason
That dew heater is slicker than snot on a brass doorknob.
Yep! I got my new dew heater ring and tested it. Worked well with my ASIair. No more strap-on …. I mean dew heater strap (aka Astro.Junkie)
No strap on!
Can you share details of the all-sky camera setup? You mentioned the actual camera, but what about the white base, clear dome etc. is that some kind of kit?
It’s poo pipe and some random cctv enclosure from Amazon .. it’s all very cheap :)
"The thing with Dylan... it's like the sun shines on you, and it's glorious. And then he forgets you and it's very, very cold." 😆 Abusive relationship, indeed. Congrats on the new gear, the Allsky rig looks cool! Beer == good.
Hehe cheers
I came across an awsome Canon lens.
400mm f4 DO. Unlike the very heavy 400 f4 your thinking of, this lens uses diffraction optics, DO, using a fresnel lens. This ligtens the lens to only 4.6 pounds , under 2.1 kg (for the rest of the world, haHa). It's very sharp, short, for good balance. A lot of people use rhe Tamron 150-600. That's the same weight, but much longer and slower. This lens can also be had in an earlier version Relatively cheep. Since you brought up Canon glass, thought I'd mention this.
Installed mine last week on my Edge11. Torture tested without using a dew shield on a humid night. Crystal clear in the morning. Will never look back!
FYI I used a generic dew controller and it worked just fine. Set it to about 50%.
Oh good to know.. No dew shield! Epic!
Ooohh. I was curious about this too. I use a UPBv2 and astrozap dew sheild + heater. But Ihave to deal with clearance on my dome door. Still, I'm probably going to keep the shield on, but trim it down a little bit as it helps with the stray light. I think this helps me decide to get the dew ring. Thank you both!!!
Also wanted to start imaging with lenses, but I only have EF-S lenses and the ZWO adapter is EF only…
Grabbed an 11' and 8" they work well with both ASI Air and Pegasus power box btw. Beer +10 points
Oh nice .. thanks !
Thanks for the repport Dylan. I´m seriously thinking about buying one for my C11" HD. But I have two doubts.
1. It´s less efficient, but could I just power and control it through ASIAIR plus, at 50% pwr for instance?
2. Is it adecuate for Hyperstar ? (possibly my next evolution)
Thanks in advance.
In your opinion do you think a heated sew shield vs the heated ring would be advantageous for keeping out unwanted light pollution vs no shield heating? I’m curious as I only had a pier (no dome) in the back yard here in brissy with my edge 8?
I’ll always use a dew shield for light pollution .. but now I’ll run the dew ring too for when I’m shooting at the zenith and dew can still fall down onto the ota :)
Love your stuff! Where can I buy a good allsky camera completely set up and ready to go?
Whenever I googled it in the past the offerings seemed wildly overpriced for what they are.
@@DylanODonnell thanks for the quick reply. Yeah, I’m a high school astronomy teacher and was looking for a under $500 option but can’t find one. Thank you though and keep up the great work!
I'm thinking of buying one! 🔭
Great video as always.. I live in such a dry desert (Phoenix, Arizona) that I have only seen dew 2.. maybe 3 times and that was from me cooling my camera to quickly I think that was over this last "winter. I dread the day I have to fight dew.. I will be ill prepared
How are those bortle 9 dusty skies?
I must get one for my RASA 11 looks a great product.
Just wondered, given that the ring evaporates any moisture, in the evaporation process is there anyway of capturing, distilling, fermenting said vapour therefore combining two of the best hobbies ever?
Good idea :)
I just received mine last week and I am plan on installing it this weekend. Thank you for the how to video and being an idiot for loosing the screw!
Took me a good 10 mins to find the bastard 😆
So do these few heaters have to be controlled by the celestron app and controller ? I’ve recently ordered a edge hd 8 and one of these dew heater rings and just assumed that an asi air pro could control it
Would you be able to use this with an ASIAIR setup? Dew is rarely a problem living in Southern California but would be nice to future proof if I were to travel to a dew heavy location. Thanks!!
I don’t think it will play nice with asi air. I’m not even sure the Dew accessories are ascom compliant ? More research required.
@@DylanODonnell I know you aren’t the traveling astrophotographer type but you should give the ASIAIR setup a go. Pretty sweet pairing especially with the RASA.
Fantastic! I love that you stuck out the bet and were rewarded for it. Cheers, or should I say bottoms up! 🍺🍺🍺🍺
Hehe thanks for the dew inspo Amy! Cheers.
@@DylanODonnell Happy to help, your videos always make me smile. Maybe I should not edit out my "Idiot" moments. lol
I recently bought an Edge HD 14" with .7X reducer. Would you recommend a particular camera for this telescope. I prefer mono but will use OSC with duo narrow band or tri-band filters if necessary. Thank you.
@Dylan O'Donnell What lens is required to get a wide FoV? Would be great to hear about the allsky setup
I’d consider 400mm or less pretty wide !
We love you drunk dylan!
Hi Dylan, what does the back side of that new dew heater ring look like? The side that touches the corrector plate where you removed the stock pads. Thanks!
Like a flat metal ring covered with a coating
@@DylanODonnell I guess the coating is to replace the gasket?
I was thinking why didn't they just make the ring sit over top of the original ring and heat it as a stack. I made a dew ring out of resistors 22 years ago for my 8" and just velcro'd it around that inner diameter against the ring and it worked well.
BTW is this ring supposed to 'replace' a light shield, which still has benefits for those of us not in observatories?
Love Step 7
darn, they came up with this after I decided to move away from the SCT to a CDK 😅😅 is it ascom compatible or must use their dew controller?
Do SkyWatcher have similar product Dylan? I have an 127mm Maksutov and yes I've had many sessions killed by dew. :(
Not that I know of .. I never seen such a neat integrated heater !
@@DylanODonnell Neither have. A very neat, practical item.
Have you stopped washing?
No, you just caught me before my annual haircut :)
@@DylanODonnell Would you do a episode on tripod levelling. How important is it with good polar alignment?
I got the dew heater ring for my C5, and then realized that I couldn't close the lid without stashing the cables on the inner clips. Do you think fiddling with those cables every time I setup the rig would damage them eventually? Would it make sense to cut a notch into the lid so that it can be places with the cables on the outer clip?
I think unclipping the cables is definitely safer than cutting the OTA... you don't want any more dust/filings in the OTA (which the screw holes already produce)
@@DylanODonnell Haha, yeah I totally agree! But I was thinking in cutting the plastic lid instead of the OTA. At least on the C5, I cannot place the lid with those pesky cables going out :)
Does it work well enough to spend the money to get it imported from the US at a ridiculous charge as you know who doesn't have any stock? I live in Canberra and most of the winter is 99% humidity after sunset.
It’s a new product so stock is light on but Bintel will have plenty eventually:)
That Team America reference was fucking gold 🤣😂
I've had such trouble with my Cgem ii mount , I've given up on it and given up on Celestron. on hold for hours, no response to my emails, in a year I've had one return email asking for my proof of purchase. I sent that and months later still nothing. I cant wait for my cem70 to arrive and take my cgem to the dump.. anyways I love your channel and the content you put out, informative and fun. keep up the good work
Where do i find this said address to send you some grog..
Should still be in the community tab .. or you can snipe it from the box in the video ;)
I was waiting for the haircut, but i can see why you kept it a bit longer!!!
I'm guessing the reason it's sold out is that it all came to you. Of course, that makes me wonder what the Monks up there must be thinking, having it all shipped to the same address in Byron Bay!
Okay, serious question. When you install the dew heater, do you get any collimation issues?
I thought the same thing! And yes, I also wonder if collimating is out. I’ll let you know :)
@@DylanODonnell I hope it's not, but I'll look forward to a future update on this.
Nice new vid Dylan. They are sold out of the Abbey Ale as you now have all of it
Hehe yup
Great video as always. You deserve more subs than those non fungible sell out astro channels have. Peace
Hey thanks Matt :) Not sure what I'm doing wrong. Maybe the visual demographic is bigger than I anticipated.
What channels are you referring to so I can avoid them?
@@DylanODonnell haha possibly. I always say it's better to be part of a minority group.
Not doing anything wrong. You are being real. I guess that's worth more than subs...maybe 🚀🔭
@@joostvisser6508 I couldn't possibly say on here. I'm sure Dylan doesn't need the additional drama!
Let me just remove that splinter from my arse.
@@DylanODonnell Your videos appear upside down to us here in the northern hemisphere, you need to invert them to get a bigger audience.
g`day dylan you should make a sign or a T shirt ..." will astrophotography for beer " great video mate cheers
Haha I like it
I just installed my ring. It's warm.
Would this allow me to get away without using a dew shield? My only complaint with a dew shield is it's effect on guiding when it's just a little breezy outside. My 4" refractor doesn't have much of a problem with the wind, But my 8" Edge HD does. So if I can get away without the need for a dew shield, then it's just a matter of balancing the DEC properly. Does anyone know why you might NOT want to do this? :O)
Nice one lads, I don't think he's realised we're trying to give him alcohol poisoning.
Good video chief. Only thing other than round stars guaranteed to get astronomers wet is no dew and graphs.
Getting moist just thinking about it! 😆
Would love to see a AllSky built/tutorial… Asking for a friend 😅. Thanks for the share 👍🏻✌🏻🇨🇦
I don't know what I'm doing really but I'll figure it out with some trial and error .. and when I do there will be a video about it! :)
Yeah, there's a screw loose alright... I have to agree that particular Canon lens is one of the greatest I have ever used. The clarity, functionality just work well. It is a bit heavy, thus the reason for the lens mount clip. We used this to take photos of the Venus transit in 2015 or 2016. Enjoy!
Yeh it's killer eh!
I was given one of these lenses by a veterinarian friend of mine. It had been dropped, and the zoom was a bit stiff as a result. I sent the lens to Canon and had it completely overhauled with a new 2-year warranty for US$600. Best photo money I ever spent.
Steve
Dude, nice haul. Have fun emptying those.
Sold out......I wonder why?
Forget the astronomy talk, can I get this beer in the States?
Nope, only if you want it shipped for over $1000 USD. Already checked into that one.
It's a *really good* beer!
Looking older! 🧡
Will be dead soon.
Tardigrades are the spice of life and add flavor to your images via dew-rain. These things are true Sir. Embrace the philosophy of the Tardigrade and watch your images transition into the microscopic world...oh it's true.
Hah!
Think Trevor would do the same challenge with some LaBats?
Maybe a kilo of (newly legal) Canadian weed.
@@DylanODonnell It's not that good. Street stuff still way better. I think
Lol, he would do it!! @Dylan you have to ask. If he grew out his hair he would look like Bobcat Goldthwait in his prime.
Great to see your hairy happy face surrounded by beer. Craig be like, I see you and I raise you.
Cheers mate. Love to see you back on youtube. Now go get that haircut. Lovely video by the way, as always.
Lol - Middle Ages payment makes a worker happy 🍻. Celsius like normal people cracked me up, too.
I don't even have a Celestron telescope, I only came here to see you bald or extremely drunk on Abbey Ale. I liked the Celsius / Fahrenheit rip so you redeemed yourself there haha 😂
I know where you haven't been... the DAMN BARBER SHOP! LOL
An important point would have been to remind users not to over tighten the screws, thus potentially avoiding cracked corrector plates--like mine.
I left a comment, but it got removed... I guess the algorithm didn't allow me to post a closing tag I added as a joke (it must've ended up in your "Held for review" section). Oh well, nice video again Dylan!
I’m in the mountains, nearly 3 kilometers above sea level. I suffer no such weakness called dew!
jealous
Hope you remembered to remove the paper sheet.
I was wondering why my subs were all black!
I am not going to die.
Close enough on the explanation. However, you're saying that the moisture forms a fog in the air which then drops onto the lens, which only happens in *really* dire situations, and no dew heater will save you then. No, what actually happens is that the lens itself cools down to a temperature that is cooler than the air surrounding it, and indeed cooler than the dew point for the amount of moisture in the air. It does this, because it has a nice cloud-free view of space, and space is cold, so it is radiatively connected to the cold of space. Then, while the air is still above dew point, your cold lens, which is now below dew point, will get that moisture condensing on it. The dew heater is there to heat up the glass, not the air.
Nice dew ring, I'd fit one to my rasa, if I had bought one before the price went up 25% :/
Ouch!
Better solution live somewhere with dew maybe noticeable 3 or 4 times in last year😛
Welcome to Spain!!
Shame about the cloudy nights and light pollution.
‘God is dead and we have killed him’ 😂😂😂 Bravo sir, bravo.
Hehe
Hey Dave, how many foos have you been fighting :) :P :P Although, after 3 cases of that stuff, you won't be in any condition to be fighting :P
Hehe
So glad I could avoid this problem by simply not owning an SCT.
We can’t all be astro chads 😆
@@DylanODonnell it's kinda an honor to receive an insult by THE Dylan O'Donnell. Thanks for taking time out if you evening to do so.
@@brandonrunyon I live to serve.
How cool is to have a opened instrument? 8-D
You still got carded by the postie though...
They couldn’t fit 3 cases of beer in my PO Box 😆
That's it, guys!! Keep him drunk, so he doesn't take any pics and ends selling his astrophotography setup at a cheap price! I'm waiting!!!
Next video, how to astroimage while completely pissed 🤪
Water vapour. Water vapour is a gas. It doesn't need to be over 100° to exist. We can observe it when we boil a kettle and it condenses back into water droplets we see as steam, but there will be a clear area above the spout where we have water vapour. It's hot then but exists all the time, even sublimating off ice.
An interesting way of observing how atmospheric water vapour behaves is to time lapse clouds to see them cycling between clear water vapour and visible water droplets.
Of course what gives water vapour its ultimate fulfilment and purpose is condensing out onto my telescope.
Lol yes!
Prost 🍻 from Austria 🇦🇹
Cheers 🍻
Sad Fahrenheit noises :( I wish the Celsius scale made sense to me but alas...
I use Celsius for everything, not a fan of the empirical system at all.
If rain has astronaut pee-pee in it I would imagine so does dew.
Oh joy, another pile of cables and gadgets attached to my OTA. How integrated!
Haha really seems like an oversight.
You are lucky. The PO steals everything of value I ship right down to birthday cards thought to contain money, but do not. I now do funds transfer and am thinking of electronic cards..
Good thing no one sent you American beer. You would wonder how you pissed us off.
I just got one for my C8, so this fit me well. Also, still not visually observing.
Hehe
I am not Breaking my Telescope with a Celestron Dew Ring! LOL
Haaa
Sometimes it's ok to be wet for astronomy.
Your liver is going to get a workout!
That is not exactly how dew formation happens. Objects emit infrared radiation and get colder when exposed to the sky. Is not that the drops fall from up.
You can see this effect when dew forms on a car surface. The roof gets colder faster than other surfaces. Also in a field you can see that dew forms on the grass but not when there is a tree nearby. The tree is emiting enough ir radiation to keep the grass nearby to cool too much.
If you have a long dew shield you still can have dew even if there is no vertical line from the lens to the sky.
put your telescope outside from the entire night, then the telescope isnt hot when you set it up and wont have as much dew if any.
Not accurate. Dew is an external process that isn't addressed by the OTA sitting around exposed. The OTA drops to 'ambient' temperature, dew is attracted to surfaces at ambient. A dew ring brings to corrector up to above ambient by 1 degree keeping that 'sponge' effect from occur on the corrector... however the OTA exterior will still dew up.
Long cables, rhymes with beer….
Haircut plzz.
Self absorption is real.
ohhhh screw you like "normal people!" :) lol Never fail to entertain good sir your the effen best Dylan
-Clear skies man !