Search found 21 matches

by Chuckwagon
Thu Dec 12, 2019 9:18 am
Forum: Cameras
Topic: ASI6200 nosepiece flange backfocus
Replies: 7
Views: 106

Re: ASI6200 nosepiece flange backfocus

I think the question is about the little flange at the base. I'd guess it's only 2mm or so thick.

To NPB, why the concern? Are you trying to use a focal reducer or a flattener and have a specific spacing you are trying for?
by Chuckwagon
Sat Nov 23, 2019 10:54 pm
Forum: Cameras
Topic: looking for full frame CMOS , cooled, with ~6um pixels
Replies: 5
Views: 355

Re: looking for full frame CMOS , cooled, with ~6um pixels

With the ASI128MC in short supply or out of stock and seemingly discontinued, the new ASI6200MC-Pro, due late Jan. 2020, and similarly priced, would be the option. It's pixels are smaller, but with 60MP to play with, binning would somewhat address the pixel size issue.
by Chuckwagon
Thu Nov 14, 2019 5:25 am
Forum: Accessories
Topic: EAF William Optics Compatibility?
Replies: 15
Views: 1344

Re: EAF William Optics Compatibility?

Another handy tip. Thanks!

:)
by Chuckwagon
Wed Nov 13, 2019 8:12 pm
Forum: Accessories
Topic: EAF William Optics Compatibility?
Replies: 15
Views: 1344

Re: EAF William Optics Compatibility?

Ah, I see. Cool. Thanks for the clarification, and the how-to.
by Chuckwagon
Mon Nov 11, 2019 7:27 am
Forum: Accessories
Topic: EAF William Optics Compatibility?
Replies: 15
Views: 1344

Re: EAF William Optics Compatibility?

That's excellent!

Does not having a focus lock screw after the mod affect performance at all? With my focus lock completely loosened it seems a little sloppy. I usually leave that screw loose enough to adjust focus, but with a bit of resistance.

Thanks!
by Chuckwagon
Thu Nov 07, 2019 4:31 am
Forum: Cameras
Topic: Focus Issues
Replies: 4
Views: 543

Re: Focus Issues

What brand and model of coma corrector are you using? Does it have instructions? Generally, there should be a specification for the coma corrector that tells you how much spacing needs to be between the corrector and the image sensor. Then you need to assemble the various spacers and connectors to m...
by Chuckwagon
Wed Nov 06, 2019 4:33 pm
Forum: Accessories
Topic: EAF William Optics Compatibility?
Replies: 15
Views: 1344

Re: EAF William Optics Compatibility?

That's very helpful. Thanks Katherine.
by Chuckwagon
Sat Nov 02, 2019 4:13 pm
Forum: Accessories
Topic: EAF William Optics Compatibility?
Replies: 15
Views: 1344

Re: EAF William Optics Compatibility?

Thanks Katherine. Just to clarify, you are saying that ZWO hasn't tested the EAF with the Star71, but a customer has used the EAF with a Star71 and it worked. Do you know if worked right out of the box, or did they need to do anything special or make modifications to get it to work? If it needed som...
by Chuckwagon
Thu Oct 31, 2019 9:24 pm
Forum: Cameras
Topic: ASI183 MC Pro
Replies: 3
Views: 234

Re: ASI183 MC Pro

Essentially, yes. If you used a full frame camera and an 810mm lens you would get about the same field of view as what you get with an ASI183MC and a 300mm lens. It doesn't actually make the 300mm lens an 810mm lens. It just changes your filed of view. It's referred to as "crop factor" because it's ...
by Chuckwagon
Thu Oct 31, 2019 7:23 am
Forum: Accessories
Topic: EAF William Optics Compatibility?
Replies: 15
Views: 1344

Re: EAF William Optics Compatibility?

As a related question, Is the EAF compatible with the WO Star71 (1st Gen) or is some DIY work required to use it?