Hallo Benjamin! Danke, danke. Genau das Video für mich. Totaler Anfänger mit dem WO Grand Turismo 80/480. War auch am Überlegen wegen dem Field Flattener/Reducer, aber das Geschraube mit den notwendigen/nichtnotwendigen Verlängerungen(?!?)....grausam....Jetzt weiss ich, dass das mit meiner Canon200D nach dem Video ganz easy geht.
First!! I think this is true for most Refractors, except for the AP ultra-high end. Even Tak needs a FF. This is so common in photo lenses and telescopes that Sony is working on a curved sensor to correct for curved optics. Really good video Astro Doc..
Thank you very much! And also for the insight. It is a really interesting topic and I am really looking forward to see more of this the more scopes I am getting!
@@Panotaker wow, that’s some serious money for just the field flattener. But in the end you need to consider that when buying the scope. It’s just part of the deal, isn’t it?
Very nice video. Field flatteners are underappreciated. There is one "cheat" technique that can improved the shape of corner stars without using a flattener. Usually, we focus using stars near the center of the image. However, if you focus using stars about 50% from the center to a corner of the image your corner stars will be slightly less distorted. Of course, the center stars will be slightly less sharp.
Thank you for all those information. I'm very interested in this telescope, but now I'm just starting the hobby. I think it is enough to explore and learn just with my star adventurer and my 200mm lenses.
I bought the field flattener for my Astrotech 72mm doublet. My photos are definitely better. Also the field flattener allows the use of my 2 inch Optolong L-Extreme Dual Bandpass filter. That’s 2 reasons to get the flattener.
Great instruction, thanks! I have a Z73 and an ASI294MC (4/3). Without a flattener, I am not even close to achieving focus. Why is that? Also, for this combo, DSO hunting, would you recommend just the flattener (73a), or the flattener/reducer (73r)? Thanks!
Thank you! I would use the flattener, because I don't need the extra field of view. With the focus, do you have the correct rings and distance set between them?
Thanks for this video. I just got the Z73 and field flattener 2 days ago. I notice you also attached the handle to the scope. As best as I can tell, I'm going to have to move the dew shield forward to accommodate moving the front ring forward in order for the handle to fit, right? I guess I won't be able to retract the dew shield all the way back, but we can't have it our way every time, right?
Wonderful and very informative! I'm a novice regarding telescopes yet learning all the time thanks to fascinating presentations such as yours. I am seriously considering purchasing the William Optics telescope you are using after much research. Forgive my question but hoping you can advise me of what accessories I need besides the field flattener. I'm especially concerned about what tripods that are not exceptionally expensive. Thank you so very much for your time and especially all you beautifully share! Greetings from Western Massachusetts, USA 👏👏🙇♂️🙌
Thank you so much for your kind words! I think you can’t go wrong with this scope. You can check my gear list on my last video for example. As a mount I would recommend something like the skywatcher HEQ5 pro. That’s what I am using. And it is a nice balance between lifting enough weight and it’s own weight and price. You should buy dew heaters for your scope and your guide scope. And of course cameras. A guide camera if you want to to guiding and of course your main camera. But here any dslr would do the trick in the beginning. Your would need an adapter for your dslr and the scope depending on your camera. If you don’t want to get too serious I would suggest using a dslr with a fixed focal length and something like the sky adventure mount. You will already have a lot of fun and you will learn so much. If you are hooked than you can upgrade and your old gear can either be sold or used by yourself as it is still valuable! Hope that helps!
@DocAstro Greetings sent with countless thanks and gratitude! I'm deeply thankful for your kind and exceptionally helpful response! Looking indeed forward to continuing this exciting journey in viewing (as well as capturing) the celestial skies! You've helped me immensely! Happy weekend! 🙌👏😊🙇♂️
Thank you so much! No, it is not modified, yet. I am still unsure about that as I love this camera for normal photography too. I guess I move on eventually to either a modified dslr or a dedicated astrocamera. But that’s the great thing about that. You can follow along and see how it works out!
@@grybukaras3000 it will never be. But totally acceptable. I am doing nearly all my pictures with a full frame dslr and you habe of course some elongated stars on the edges but I crop them out if it is noticeable
Only problem when introducing the flattener is that you take a scope with great optics and you introduce garbage optics with more CA into it with the lower quality glass of the field flattener. I am not sold on the idea that a flattener is necessary or ideal unless you get a very high quality product and then you are spending a lot more money.
Thank you for your opinion! If the field flattener has bad optics i am totally with you! if you have a really nice scope you should not downgrade it with bad optics. So you are right you need to get a good field flattener. I have to say that I am really impressed with the image quality of the zenithstar in combination with the field flattener, though. I guess they have really good optics in there. And it isn’t cheap either.
Hallo Benjamin! Danke, danke. Genau das Video für mich. Totaler Anfänger mit dem WO Grand Turismo 80/480. War auch am Überlegen wegen dem Field Flattener/Reducer, aber das Geschraube mit den notwendigen/nichtnotwendigen Verlängerungen(?!?)....grausam....Jetzt weiss ich, dass das mit meiner Canon200D nach dem Video ganz easy geht.
First!! I think this is true for most Refractors, except for the AP ultra-high end. Even Tak needs a FF. This is so common in photo lenses and telescopes that Sony is working on a curved sensor to correct for curved optics. Really good video Astro Doc..
Thank you very much! And also for the insight. It is a really interesting topic and I am really looking forward to see more of this the more scopes I am getting!
My AP-130 F6 takes a $1000 FF!
@@Panotaker wow, that’s some serious money for just the field flattener. But in the end you need to consider that when buying the scope. It’s just part of the deal, isn’t it?
Nice explanation on the need and use of a field flattener. Good video on attaching the flattener for a DSLR.
Thank you!
Very nice video. Field flatteners are underappreciated.
There is one "cheat" technique that can improved the shape of corner stars without using a flattener. Usually, we focus using stars near the center of the image. However, if you focus using stars about 50% from the center to a corner of the image your corner stars will be slightly less distorted. Of course, the center stars will be slightly less sharp.
Thank you! That sounds interesting. After that you would stitch those images together, wouldn’t you?
Thank you for all those information. I'm very interested in this telescope, but now I'm just starting the hobby. I think it is enough to explore and learn just with my star adventurer and my 200mm lenses.
Absolutely! Do that first and evolve from that!
I bought the field flattener for my Astrotech 72mm doublet. My photos are definitely better. Also the field flattener allows the use of my 2 inch Optolong L-Extreme Dual Bandpass filter. That’s 2 reasons to get the flattener.
What FF did you get? I have AT72EDii and adjustable FF, and it just doesn’t work! I got that FF from AT website, but its garbage and I just wasted $$.
@@printrun5 I have the original AT-72. I have .08 field flattener reducer made for it. It works great. But not as good as the Redcat 51.
Great instruction, thanks! I have a Z73 and an ASI294MC (4/3). Without a flattener, I am not even close to achieving focus. Why is that? Also, for this combo, DSO hunting, would you recommend just the flattener (73a), or the flattener/reducer (73r)? Thanks!
Thank you! I would use the flattener, because I don't need the extra field of view.
With the focus, do you have the correct rings and distance set between them?
Very nice video
How do I correct the focus do I use eyepiece or go with number
If numbers where do I get the numbers .
Sorry for the late answer, didnt notice it. You get them with the field flattener and from WO website.
Thank you!
Thanks for this video. I just got the Z73 and field flattener 2 days ago. I notice you also attached the handle to the scope. As best as I can tell, I'm going to have to move the dew shield forward to accommodate moving the front ring forward in order for the handle to fit, right? I guess I won't be able to retract the dew shield all the way back, but we can't have it our way every time, right?
Hi! Thank you!
I haven’t notice any problems with the dew shield and the handle.
Have a lot of fun with the scope!
Good video with good examples, thanks Doc, Dr. Moose
Thank you!
Wonderful and very informative! I'm a novice regarding telescopes yet learning all the time thanks to fascinating presentations such as yours. I am seriously considering purchasing the William Optics telescope you are using after much research. Forgive my question but hoping you can advise me of what accessories I need besides the field flattener. I'm especially concerned about what tripods that are not exceptionally expensive. Thank you so very much for your time and especially all you beautifully share! Greetings from Western Massachusetts, USA 👏👏🙇♂️🙌
Thank you so much for your kind words! I think you can’t go wrong with this scope.
You can check my gear list on my last video for example.
As a mount I would recommend something like the skywatcher HEQ5 pro. That’s what I am using. And it is a nice balance between lifting enough weight and it’s own weight and price. You should buy dew heaters for your scope and your guide scope. And of course cameras. A guide camera if you want to to guiding and of course your main camera. But here any dslr would do the trick in the beginning. Your would need an adapter for your dslr and the scope depending on your camera.
If you don’t want to get too serious I would suggest using a dslr with a fixed focal length and something like the sky adventure mount. You will already have a lot of fun and you will learn so much. If you are hooked than you can upgrade and your old gear can either be sold or used by yourself as it is still valuable!
Hope that helps!
@DocAstro Greetings sent with countless thanks and gratitude! I'm deeply thankful for your kind and exceptionally helpful response! Looking indeed forward to continuing this exciting journey in viewing (as well as capturing) the celestial skies! You've helped me immensely! Happy weekend! 🙌👏😊🙇♂️
Der Balkon sieht sehr ähnlich aus. Wohnen Sie zufällig in Bonn?
Nein das war in Potsdam ;-)
Is the canon dslr Astromodded?
Great video 👍
Thank you so much!
No, it is not modified, yet. I am still unsure about that as I love this camera for normal photography too.
I guess I move on eventually to either a modified dslr or a dedicated astrocamera.
But that’s the great thing about that. You can follow along and see how it works out!
@@DocAstro ah ok i understand 👍 what dedicated Astro cam would you recommend as a first?
So is it totally flat with full frame camera?
@@grybukaras3000 it will never be. But totally acceptable. I am doing nearly all my pictures with a full frame dslr and you habe of course some elongated stars on the edges but I crop them out if it is noticeable
Awesome
Awesome video 🔥
Excuse me, is Flat 73 A very important? If not, what will happen?
As I said in the video it depends on your camera and what you want to achieve. For me it was very important and I would say it is mandatory.
I'm a beginner who wants to shoot galaxies and nebulae.
@@Desmoines0807 what camera are you using or intent to use?
What is "the screw" you tighten after installing the field flattener. In the video you do not point it out the screw.
4:47 Same ...
😅
FOR EAA does not matter, as your viewing live and not concerned for the best images. Only needed for astrophotography
Absolutely! Definitely something to consider. Thank you for that remark!
Only problem when introducing the flattener is that you take a scope with great optics and you introduce garbage optics with more CA into it with the lower quality glass of the field flattener. I am not sold on the idea that a flattener is necessary or ideal unless you get a very high quality product and then you are spending a lot more money.
Thank you for your opinion! If the field flattener has bad optics i am totally with you! if you have a really nice scope you should not downgrade it with bad optics.
So you are right you need to get a good field flattener. I have to say that I am really impressed with the image quality of the zenithstar in combination with the field flattener, though. I guess they have really good optics in there. And it isn’t cheap either.