ZWO CAA Tried and Tested - Everything You Need To Know About The New Rotator
Specs and Preorder affiliate links - thank you for supporting the channel: US: https://bit.ly/3DsC0St Europe: https://bit.ly/4a6uQ2R Unboxing and testing the new ZWO CAA (Camera An...
Will I need to check the box “calibration data reverse rotation” for my carbon star 200 Newtonian with the coma corrector ?
No
Have you ever tried to put the rotator between the scope and the flattener? That way, backfocus would not matter.
I haven't tried it. I don't know if flatteners would work as well if they're not at the correct distance
I have the CAA attached to my 7 position 2 inch EFW [which is bolted to my 2600 mm] and there is a light leak. People were placing gaffer tape with the leaks on the EFW but this is no longer possible with the CAA since it [obviously] is dynamic and moves. Any thoughts appreciated as I love being able to frame objects. I suspect the leak is not that big a deal while imaging [in the dark] but still...unacceptable IMO.
add a no go range so you can be sure to miss your mount! just like cable rotation know where the limits are for rotation due to the location of the mount. for example below some angle your range is limited but go shallower by some movement and this expands until it removes the limit. it's geometry can't be that hard or you just do it by hand.
It’s a risky little game for sure
Nice Review ..well done on the Cable management best ive seen with this rotator..!
thank you! I'm a velcro strip stan all day haha
ciao Luca, dimmi un po', ma sul file, sulla foto, come informazioni o nome del file ci sono anche i gradi di inclinaizone? registra questa info il CAA?
Certo, fa parte del FITS header, c’è la chiave parola ROTATION con l’angolo del CAA
I’m a bit confused once it rotates between plans or objects will the guiding recalibrate automatically if I have a 2600 duo
you would have to select "guiding data rotates with FOV" - the ASIAIR will know to rotate automatically and no need to recalibrate!
Ahh. That’s cool
Hi! Thanks for the review. I also run sessions with the AsiAir. Can you tell me if saves the rotation info in the fits header?
it's not the CAA rotation but the sky rotation, which is already saved today
Great video. I think i have decided i don't need it. If it was a filter wheel with a rotator built in so that only the camera rotates and not the filter wheel then i think i would be interested in getting it.
I wouldn't want anything between my filter wheel and camera! the closer the filters are the better
@the_space_koala Yes i agree but what i meant is i would like ZWO to design a device which incorporates a filter wheel and a rotator which maintains the distance between the camera and the filter but only rotates the camera and not the filter wheel section. i think this could be done if they put a bit of taught into it.
@robmailconway it would be more critical in terms of the flats though if you rotate the sensor compared to the filters
@the_space_koala Oh yeah good point.
I was curious if the EAF remote worked on the CAA. Thanks for testing this.
yes it did, it's in the video
Place the CAA in front of your optica train. Else you have to make flats for every different rotation angle!
of course you do! don't you make new flats also everytime you rotate your camera by hand?
Your review of the rotator is hands down the absolute best!!!
thank you!
Hi, Excellent review - thank you. I have a telescope with much longer backfocus (CDK 12.5) - but want to continue using my EFW and OAGL; Where would you place the rotator? If I put the CAA between the OAGL and EFW, it would keep the OAGL in the same orientation (ie no rotation) which would avoid redoing PHD recalibration. But the flats may need to be redone. Let me know if this makes sense Thanks Sam
I would personally put the rotator nearest to the telescope and rotate the rest of the setup. I don't know if you saw the part I mentioned that it can auto-rotate the calibration (at least within ASIAIR, I'm sure it's also a possibility in Phd2) so no need to recalibrate everytime. The filters rotate with the camera so if you have a 100% clean and perfectly centrally illuminated tube perhaps you don't need flats for each orientation, but I would do them anyway (trust issues :D)
@ - thank you so much for your help. It makes sense to rotate all the accessories together from Oag to camera. The thing for me to verify is vignetting for a FF camera - at that distance from the sensor the image cone will be wider Take care and keep these great videos coming Sam
The only problem for me is that I already have 59mm of back focus because of the OAG so I could not add another 16mm
how do you arrive at 59mm?
@ I use the Zwo EFW 20mm, the askar OAG 19.5mm, an adapter which is only 2mm, and the distance from the sensor to the camera connector is 17.5mm. My camera is the ZWO 533mc pro. I could use a guide scope instead of the OAG but I like using the OAG.
Great review and demonstration. you r videos are very informative. thank you.
Thank you!
You can get a pre-order now.
It costs 2500 RMB on their Chinese website, that’s about CHF 310. … 48h delivery time within China.
Delivery in January though
I already see one frustration I would have. Why didn’t they also include CAA to M42. Backfocus is a premium on fast set ups. Would have been good if they provided M42 to connect it directly to the 7x36 EFW. Give the users options
I think the target audience is Duo users and with that one you’re forced to use the 2” filter wheels. But I agree and I’m sure that either they will come out with the m42 adapter or another company will within 2 weeks 😁
@the_space_koalaI just bought a CAA and a CAA to M42 adapter for it just now. ZWO offers them now.
ZWO now offers a CAA to M-42 adapter plate, so this issue is now moot.
i like the different targets at different angles, but how do you do flats? is it accurate enough to return to a previously used angle to do flats the next day?
It should be accurate enough in principle - I would trust it and would not do flats before each rotation
Excellent presentation!
Thank you