I think this was a well done review - I admit I was very critical of this approach and glad to see that it works for short focal lengths - My own experience with my 14" EdgeHD, an ASI2600MM Pro and a ZWO OAG with a Lodestar X2 is that at the longer focal lengths finding enough bright stars is always a challenge and putting a narrowband filter in front of the guider will make it just that much more difficult. I'm not sure if ZWO will ever make a mono version of this camera but I'm not convinced from this review that it would work well for single passband Ha, OIII, and S2 filters - As you know a 3 nm dual band filter is really passing 6 nm of light to the guider - to me a convincing acid test would be with a narrow S2 filter in the image path (not a dual band light pollution type of filter) - if that works I'd be impressed. I look forward to a test with a long focal length scope. Thanks for the excellent review !
thanks ... no its def not going to suit every scenario ... TJ is busy testing with longer FL on his Edge 11 so we might have some idea soon. I'll have to pull a filter out of the wheel and try that test! not too difficult to do a I have a spare wheel and filters on my desk. Stay tuned! I'd def love a mono version!
Hope you enjoy it! I'm quite taken with it :) It won't work for everyone and it won't fit every scenario but for many it will make like a lot easier and less messy :)
yes can do a follow up ... in effect its not really much to see .... a camera like the 2600 on a scope ... the magic is inside the faceplate :) the 2600 is a well known camera and the images will be the same too which is why we concentrated on the guide quality
@@TeamAstroworkz sure, I mean live shots of the guiding screen, not the final result of the camera as it will be the same as 2600 's sensor which everyone knows :) Thank you!
Hello Simon, need your help here please: Firstly, this is great video so thank you so much for the efforts. I have Edge 8, and a 0.7x reducer - making image circle 26mm. Am not sure if this expected to work well, but am struggling to get guiding stars (sometimes I have only one blurry star), specially when I image galaxies such as Whirlpool, Bode's, Cigars etc. By not using the 0.7x reducer, the image circle becomes 44mm, however since focal length is high (2032mm), the Field of view narrows down, and hence reduces guiding stars, leaving me on the same problem as above. I have finetuned the silver focus knob on DUO, increased gain and exposure enough under clear skies, but no luck. Please advise.
42 mm is the image circle needed to cover full-frame 35-mm film. The OAG can tolerate some vignetting or coma that a photographer wouldn't want to see. I think that is why nearly all telescopes have image circles big enough for this instrument.
Excellent video. Very helpful. Wondering if you have any thoughts on the duo for my application. I just finished building my roll off roof observatory with an Edge HD800. I use the Celestron Edge HD reducer, mounted on a solid 12” pier. Can you safely say that this duo would be a good addition to my set up? Much appreciated my friend! I do love the breadth of topics covered, and your explanations are very clear, and easy to understand. I appreciate all Astroworx does. Sincerely, Tony V
thanks Tony - appreciate the feedback - we have not yet had a report on this setup with the image circle - the 9.25" reducer does work for sure - what we do know is that the image circles from these are larger than those stated which seems to be guarantee star quality - so MOST likely Tony :) but not yet 100pc confirmed !
First I think those are just rumors. I have 5 cameras and have never had this issue. I talked to a friend last night and he has 8 cameras and he has also never had the issue. Second the new duo does have a completely new suspension system that hold the fan. So these rumors should become a thing of the past.
I checked my latest version ASI 071 with my VIBROMETER and it was fine. That being said I also installed the commercial fan dampers available from several companies. Before and after was mostly negligible. In any case actual image results showed no issue with image quality. I also checked some of my other cameras including a heavy and large SBIG STL 6303e mono with full set of internal 2" filters. No issue with any of the cameras but the one that had the absolute best vibration performance was my ATIK which had NO detectable vibration. I was also amused that the fan used in my SBIG STL6303e was the identical fan and model of the one in my ZWO 071. These fans are extremely cheap and easy to replace so if you had a bad one if would be best to just get another fan. Note that dust and grime can accumulate on the blades of the fan over time so probaby good idea to clean those blades with a paint brush on a regular basis to avoid out of balance issues.
@@TheNarrowbandChannel I 100% believe you that you haven't had problems, and I 100% believe knowledgeable people that they have changed their mounts/dampeners. That said, there are numerous videos from people showing before and after images with stock vs upgraded fan dampeners that did make a significant difference.
I don't really - thats not my day job :) but as I said we were loaned them for testing and we would publish what we find good or bad ... I don't believe in only posting glowing reports if there are things that don't work
Question, can I use the Zwo duo on a 14 inch F5 Newtonian ? I want to place the camera in the center of the scope instead of the secondary mirror, direct imaging. I also want to use a corrector.
Well done being out in front on this. You pointed directly to my setup, the Edge HD8, and .7x reducer resulting in a much smaller than usual image circle. The reducer on the Edge HD8 results in a focal length of 1422mm at F7 with a 26.7mm image circle, so it has me in doubt about whether the ASI2600 Duo will auto-guide with my rig. Any chance you could test this setup?
that's the question we can't answer right now ... TJ has a 9.25 and now 11... with reducer and works fine and he has not had any issue or with his hyperstar - but neither of use own the 8 or RASA's so there are still some gaps in the testing for sure until its more widely released
Interested to know TJ's findings with the HD9.25. I own same scope. Would like it to use with a OSC and a filter drawer (2"). Would. like to know how he managed to get his backfocus without using a T-adapter (I have read the T-adapter may not work with the duo as the image circle is smaller)
I don't know much about Tak telescopes but I am quite surprised about the guide stars lack of roundness. All screenshots you showed were similar. That's something I would have expected to see with a RASA. How would you explain this?
The Celestron White paper on the RASA 8 shows it as having a 'useful field' of 32mm and no doubt with poorer quality beyond that so guiding with a a DUO on a RASA 8 should be do able...
Rather than the value of 91% QE shown on the ZWO description chart (pictured on this video from 3:02 to 3:19), this table entry has been changed by ZWO to now show as 80%. This is a huge decrease in efficiency.
Thank you very much for this very interesting Video! I have a Skywatcher 80 ED (F 7.5) on an Eq5 Pro, and I also have an Optolong L-Ultimate filter. My question is : Do you know if anyone has tested the ASI 2600 MC Duo with this configuration (Optolong L-Ultimate 3 nm and F 7.5)? Thank you
@@TeamAstroworkz Hello Simon, need your help here please: Firstly, this is great video so thank you so much for the efforts. I have Edge 8, and a 0.7x reducer - making image circle 26mm. Am not sure if this expected to work well, but am struggling to get guiding stars (sometimes I have only one blurry star), specially when I image galaxies such as Whirlpool, Bode's, Cigars etc. By not using the 0.7x reducer, the image circle becomes 44mm, however since focal length is high (2032mm), the Field of view narrows down, and hence reduces guiding stars, leaving me on the same problem as above. I have finetuned the silver focus knob on DUO, increased gain and exposure enough under clear skies, but no luck. Please advise.
Doesn't # of guide stars depend on the part of the sky ? Away from the galactic plane, fewer stars are available for guiding, aren't they? Am I mistaken?
Thanks for the review. Currently using a 533MC with a 220mm guide, 80mm refractor and of course on my new favorite mount the AM5. Question can the AIR power this camera or does it need a separate power supply?
Simon, I read somewhere--possibly the ZWO Forum--that this Duo will not work on the RASA as the light cone does not illuminate the guider chip. Can you confirm that this will or will not work on the RASA 8? Thanks, excellent content here.
I have a similar setup to yourself and this is interesting however I'd still like to see real-world tests by people without a vested interest with ZWO (no offense I love your work)
Tyler and I said from the start that we are only going to publish results that we actually find - if stuff doesn't work then we are going to say it doesn't - I don't believe in publishing videos with false info for someone to then spend hard earned money on and find it didnt do what they expected - to do these videos I theres some boundaries we have to follow - if I thought it was a lemon I'd not be publishing and telling ZWO's team just that ! We can't test every scenario either which is what I said in the video. It won't fit everyones set up and some will have to do more research particularly around image circles. But we also found not everything is black and white there either :) But I am very aware of the that Nik :)
@@TeamAstroworkz I understand that mate but maybe make it available for some end users to test who are not affiliated with ZWO they can report back to you as well.
Hello, at the moment I have two telescopes, a TS 80 with a 480 mm focal length and a TS RC 6 inches with a 155 mm aperture and 1370 mm focal length. I have an ATIK 383L+ but I would like to switch to CMOS and I was thinking about the ASI 2600 DUO. Do you think it would be a good choice? Thank you so much.
Thanks for this test. It's quite interesting indeed. As far as I can understand, using this set-up on an SCT at f/10 isn't the best idea (or even on my Skymax 180 at f/15). I own an SVBONY 102ED refractor at f/7, and the matching 0.7 reducer (I think this one offers a 28mm circle). I am wondering, would a monochrome ASI2600 Duo work well with NB filters with this refractor? (the horrible light pollution here in Athens doesn't seem very conductive on using an OSC camera)
thats a very qood question and one I've asked ZWO about :) a mono version! The image is an interesting one ... its not clear but some stated image circles are only for the centre of the image and further out the image doesnt just stop ... but you might have less than circular shaped stars - PHD and ASIAIR both managed on my 127 refractor reducer and the star were very much mishapen
@@TeamAstroworkz from what I understand PHD2 doesn't even need circular point stars in order to do its job. And since your guiding camera is at the same focal length as the main camera, it should have quite a generous amount of fine correction compared to a 230-250mm focal length guide scope.
Ok, we know now that it works on fast scopes with short focal length even with dual narrowband filters..... WOW!!!! First of all that is an EXTREMELY low bar, second of all what is the point? For these kind of scopes any guiding solution like a small guide scope or an OAG will do well and there is almost no saving as Duo is more expensive. Then you have issues like that you have to calibrate every time you turn the camera, which is not the case with any other guiding solution. So thanks for testing but my verdict stays unchanged that this camera does not really make any sense, with a few exceptions like the Hyperstar.
it fits some scenarios but won't fit everyone ....as I said.... and you're most welcome to your views ... and for sure not all will find it of use ... the 2600 is 1800, duo 2000, a 220 is 300 and then add a guidescope on top so individual components is def more expensive off the shelf... but despite that .. its less mess with cables etc. For long FL scopes and OAG it might not be for you ... I can see and already experienced the ease of using it to simplify a system... so we'll have to agree to disagree there :)
Unfortunately, your "pushing the envelope" didn't really push the envelope. At 500mm and f/6 it's not particularly challenging to use an OAG,. While people certainly use them on any size scope, the place where an OAG is really needed is in long focal length scopes with their resulting very small field of view. That small field of view makes it tough to find a guide star at times with those setups, even though you're guiding in front of the filter. Putting the guide camera behind a filter like the Duo does will certainly make that even harder.
yes very aware of that and its a valid point - TJ is doing further tests on this as well .. as I said in my video he loves his reflectors :) I think Duo does more than replace an OAG ... it really replaces a guidescope on any set up too. Which i think will make it popular but it won't fit every scenario or set up for sure. We will publish more as TJ gets a a smoke free window
@@TeamAstroworkz No worries :) My 2600mc Pro is doing fine but imagine the RASA minus one cable dangling from the front end. Imagine guiding the Edge HD 8+0.7 Reducer and no guidescope or OAG-L !!! Imagine if you can :)
