Sure, definitely, I follow you cos you have nice content, which helps a beginner like me a lot. Also yes, i understand your pain, even i barely got any clear skies in the past 3 months, due to the unending rain, wild fires and cloud cover. I must have got like 1 or 2 clear nights on weekends, that's when I can do imaging. But keep them coming as you can. Good Luck and Clear Skies.
One more nice vidéo Angus ! The guys at WO know how to make unique and beautifull refractors. Pricey but high quality gear. I’m so happy with my z61 mk2, integrated bathinov mask is a brilliant idea and yes, they are just beautyfull pièces of gear. My next refractor will surely be a WO ! Thank you for the review, stay safe and clear skies. Remi
Thanks Joe! Haha yeah that kitty is a regular visitor. And thanks for saying this was a good capture, you're too kind! (I kind am disappointed about it)
Hey- would you recommend this model or the Redcat 71 to a beginner? Your rec? Also do these support/ work with the new Sony a7IV camera? Does it need any special attachments? Thank you 🙏
Both requires a M48 T-Ring adapter for the Sony E-mount and you'll be good to go. For a beginner, I would recommend the Redcat 71 due to its ready to go, right out of the box nature. You don't need to worry about field flattener, or back-focus and just plug in your camera and go.
G’day Angus Great review mate! I do agree with you regarding WO scope. They are great looking scope. I have a WO132 that a bought second hand here in OZ. I really enjoy using it when I get the chance Cheers mate & keep up great content
Does lowering the F-ratio really help lower the thermal noise on your DSLR? I don't understand... isn't your camera snapping away all night? I assume it's capturing for 200-300s followed by a quick 1-2 second pause while the readout is done. Then it starts another frame. Even if you do 100-200s subs... it's still 100-200s followed by a 1-2s pause and then start another slightly shorter exposure. What am I missing?
You brought up a great point and it's actually something I am attempting to learn, and get to the bottom of since I recorded this video. I am seeing more and more evidence that the thermal noise is actually related to the length of the overall session time and entire operational time of the camera + ambient temperature. And not just individual exposure time as I mentioned during the time of the filming. So, I could be entirely wrong and I will actually do an experiment soon with various exposure times and see whether or not long exposures matter vs overall length of camera operation time. Thanks for pointing that out! 🙂
@@nocturneastro2539 If you have a newer (than me) DSLR then you can find the temp in the EXIF data. If you use NINA, you can insert that temp into the file names. I'm betting that you'll see the temp increase steadily in the beginning of the session and then plateau and stay the same the rest of the night. Ambient temp drop outside throughout the night will probably bring the camera sensor down slightly. It might be best to test inside and you don't even need the camera hooked to the OTA. Just run a set of 60s exp. followed by something like 180s after the camera is sufficiently warmed up. :-) Happy testing!
I got the Sky-Watcher 80ED which has a native FL of 600mm. In hindsight, I wish I had gone for the 72ED or one of the William Optics equivalent ones as even with a 0.85x reducer/flattener, the focal range is 510mm, (which is effectively over 800mm on a crop sensor) it is still just a liiiiiittle too zoomed in for many of the objects I primarily wanted to image.
I purchased the 100ED this Summer so I feel your pain. That being said, I got it for $550 because the aluminum case was damaged. Half off because of a damaged case? SOLD!! I put the .85 reducer/flattener on it last night and plan on capturing parts of the Veil Nebula with it this evening. I will likely start with The Witches Broom and then on to the Network Nebula. With the reducer it frames up nicely with the asi294mc pro. I hope to purchase the WO Redcat 51 by the end of November.. unless Mike @ Astronomics sends me an Astro-Tech AT72EDII first. Then I’ll wait until the end of December to buy the Redcat. Lol
A few questions. Im planning on getting this scope, and i shoot with a Nikon dslr. What accessories do i need to connect the two? A field flattener/focal reducer and a 48mm t ring adapter?
Correct, get the WO FLAT6AIII 0.8x focal reducer. Or if you want to use it at its native focal length, get the Hotech SCA 1:1 field flattener (that one uses a M42 connection! Just FYI). For the 0.8x focal reducer, a M48 connection will do.
Great stuff Angus. I fully concur with you on the William Optics look and feel. I own the RedCat51 and the ZenithStar 81 APO. Love both scopes. looking now into more focal length....wished WO still was selling the 102 /714 scope (which is nearly equal to the AT102ED) . Perhaps I will find one.....And I'D like to work with the new scope with a 1:1 flatter to keep the larger focal length. Keep up the good work. Cheers Hendrik
Just found your chanel & Subbed.. I agree an 80mm is a great all round scope. very versitle. I have a Stellarvue 80mm APO with smilar FL. Great image of the Pelican!! clear skies.
Thank you! Ooooh many people would be envious of your stellarvue! 👍🙂 Thanks for visiting! I will try to have more uploads despite living underneath never ending clouds.
Aside from the obvious focal length difference. Both are superior quality products. The main difference is that the Redcat essentially have a field flattener built in. Whereas the GT requires a field flattener and the back focus (headache) that comes with it. Both are amazing instruments! It really comes down to how much focal length you need.
Hello! Great video, I was wondering what eyepiece would go great with the GT81. I am a new astrophotographer and I am a little confused on what to buy for my GT81. Thank you
Eyepiece... for visual observations? Unfortunately, I have little to no knowledge on for visual observation. Did you mean field flattener/focal reducer for the GT81? Let me know and I can help you. :)
@@nocturneastro2539 Ah yes I did mean visual observation, but since you mentioned, what would be a good flattener? And if you know anything about guidscopes/red dot finder, what would fit best on the GT81, thank u !!!
@@fruitloops3570 I can't comment on visual observations or red dot finder, that's beyond me. - 1:1 field flattener - Hotech SCA field flattener - focal reducer - William Optics FLAT6AIII - Guide scope - ANY guide scope would work. No need to be fancy, you just need it to resolve dots in the sky. I've used SVBONY 50/60mm guide scope, worked as well as anything else.
![[INTRODUCING] Founder Optics FOT106 - Beautiful New Refractor!](http://i.ytimg.com/vi/RlfxWrV59sg/mqdefault.jpg)
This is such an amazing review... i loved it. Thanks Angus!
Thank you! Come back for more! Though it's getting harder and harder to come up with content with these unrelenting cloudy nights!
Sure, definitely, I follow you cos you have nice content, which helps a beginner like me a lot. Also yes, i understand your pain, even i barely got any clear skies in the past 3 months, due to the unending rain, wild fires and cloud cover. I must have got like 1 or 2 clear nights on weekends, that's when I can do imaging. But keep them coming as you can. Good Luck and Clear Skies.
I just bought my first telescope, William Optic Z61 and it is a remarkable piece of equipment.
They ARE works of art. Can't deny that!
One more nice vidéo Angus ! The guys at WO know how to make unique and beautifull refractors. Pricey but high quality gear.
I’m so happy with my z61 mk2, integrated bathinov mask is a brilliant idea and yes, they are just beautyfull pièces of gear.
My next refractor will surely be a WO !
Thank you for the review, stay safe and clear skies.
Remi
They are awesome aren't they? Sometimes I just look at them on a sad cloudy night... Haha 🤣
Nice video Angus! That cat though lol...nice capture as well!
Thanks Joe! Haha yeah that kitty is a regular visitor. And thanks for saying this was a good capture, you're too kind! (I kind am disappointed about it)
Great review! I have the smaller bother, the GT71, and I'm loving it.
Equally awesome telescope!!! 😃
Same here, GT 71. Love it so far.
Great review!
@@MrBengourben it's such a great scope! 🙂
Hey- would you recommend this model or the Redcat 71 to a beginner? Your rec?
Also do these support/ work with the new Sony a7IV camera? Does it need any special attachments?
Thank you 🙏
Both requires a M48 T-Ring adapter for the Sony E-mount and you'll be good to go.
For a beginner, I would recommend the Redcat 71 due to its ready to go, right out of the box nature. You don't need to worry about field flattener, or back-focus and just plug in your camera and go.
Funny video and informative thx!
Very cool. I didn't realize that the reducer actually reduces the effective aperture of the scope.
G’day Angus
Great review mate!
I do agree with you regarding WO scope.
They are great looking scope.
I have a WO132 that a bought second hand here in OZ.
I really enjoy using it when I get the chance
Cheers mate & keep up great content
Thanks for checking out the video! Yeah these W.O. instruments are simply stunning? 🙂🙌
Does lowering the F-ratio really help lower the thermal noise on your DSLR? I don't understand... isn't your camera snapping away all night? I assume it's capturing for 200-300s followed by a quick 1-2 second pause while the readout is done. Then it starts another frame. Even if you do 100-200s subs... it's still 100-200s followed by a 1-2s pause and then start another slightly shorter exposure. What am I missing?
You brought up a great point and it's actually something I am attempting to learn, and get to the bottom of since I recorded this video. I am seeing more and more evidence that the thermal noise is actually related to the length of the overall session time and entire operational time of the camera + ambient temperature. And not just individual exposure time as I mentioned during the time of the filming. So, I could be entirely wrong and I will actually do an experiment soon with various exposure times and see whether or not long exposures matter vs overall length of camera operation time. Thanks for pointing that out! 🙂
@@nocturneastro2539 If you have a newer (than me) DSLR then you can find the temp in the EXIF data. If you use NINA, you can insert that temp into the file names. I'm betting that you'll see the temp increase steadily in the beginning of the session and then plateau and stay the same the rest of the night. Ambient temp drop outside throughout the night will probably bring the camera sensor down slightly. It might be best to test inside and you don't even need the camera hooked to the OTA. Just run a set of 60s exp. followed by something like 180s after the camera is sufficiently warmed up. :-) Happy testing!
I got the Sky-Watcher 80ED which has a native FL of 600mm. In hindsight, I wish I had gone for the 72ED or one of the William Optics equivalent ones as even with a 0.85x reducer/flattener, the focal range is 510mm, (which is effectively over 800mm on a crop sensor) it is still just a liiiiiittle too zoomed in for many of the objects I primarily wanted to image.
You can always sell it and get what you really want 😉. Given the current market, I doubt you'd lose much money selling your current scope.
I can... but I don't want to, lol! (you know how it is, optics are dear to us)
I purchased the 100ED this Summer so I feel your pain. That being said, I got it for $550 because the aluminum case was damaged. Half off because of a damaged case? SOLD!!
I put the .85 reducer/flattener on it last night and plan on capturing parts of the Veil Nebula with it this evening. I will likely start with The Witches Broom and then on to the Network Nebula. With the reducer it frames up nicely with the asi294mc pro.
I hope to purchase the WO Redcat 51 by the end of November.. unless Mike @ Astronomics sends me an Astro-Tech AT72EDII first. Then I’ll wait until the end of December to buy the Redcat. Lol
A few questions. Im planning on getting this scope, and i shoot with a Nikon dslr. What accessories do i need to connect the two? A field flattener/focal reducer and a 48mm t ring adapter?
Correct, get the WO FLAT6AIII 0.8x focal reducer. Or if you want to use it at its native focal length, get the Hotech SCA 1:1 field flattener (that one uses a M42 connection! Just FYI). For the 0.8x focal reducer, a M48 connection will do.
Temperature is probability 15 degrees F hotter for the sensor.
Great stuff Angus. I fully concur with you on the William Optics look and feel. I own the RedCat51 and the ZenithStar 81 APO. Love both scopes. looking now into more focal length....wished WO still was selling the 102 /714 scope (which is nearly equal to the AT102ED) . Perhaps I will find one.....And I'D like to work with the new scope with a 1:1 flatter to keep the larger focal length. Keep up the good work. Cheers Hendrik
Just found your chanel & Subbed.. I agree an 80mm is a great all round scope. very versitle. I have a Stellarvue 80mm APO with smilar FL. Great image of the Pelican!! clear skies.
Thank you! Ooooh many people would be envious of your stellarvue! 👍🙂 Thanks for visiting! I will try to have more uploads despite living underneath never ending clouds.
How did you find this scope compared to the Redcat 51.
Aside from the obvious focal length difference. Both are superior quality products. The main difference is that the Redcat essentially have a field flattener built in. Whereas the GT requires a field flattener and the back focus (headache) that comes with it. Both are amazing instruments! It really comes down to how much focal length you need.
Hello! Great video, I was wondering what eyepiece would go great with the GT81. I am a new astrophotographer and I am a little confused on what to buy for my GT81. Thank you
Eyepiece... for visual observations? Unfortunately, I have little to no knowledge on for visual observation.
Did you mean field flattener/focal reducer for the GT81? Let me know and I can help you. :)
@@nocturneastro2539 Ah yes I did mean visual observation, but since you mentioned, what would be a good flattener? And if you know anything about guidscopes/red dot finder, what would fit best on the GT81, thank u !!!
@@fruitloops3570 I can't comment on visual observations or red dot finder, that's beyond me.
- 1:1 field flattener - Hotech SCA field flattener
- focal reducer - William Optics FLAT6AIII
- Guide scope - ANY guide scope would work. No need to be fancy, you just need it to resolve dots in the sky. I've used SVBONY 50/60mm guide scope, worked as well as anything else.
From your experience what is the appropriate focal length for galaxies?
If you ask me, I'd say at least 1000mm of effective focal length.
I thought the Grand Turismo IV is a triplet and the Non-IV version is a doublet?
All Gran Turismo (at least to my knowledge) are triplets. That's WO's triplet line. Zenithstar is WO's doublet line.
hahaha I've heard scream type sounds in my backyard in the middle of the night myself ...