QHYCCD

Optic Back Focal Path data

QiuHY

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Re: Optic Back Focal Path data
« Reply #15 on: October 21, 2017, 10:36:04 AM »
Hello Qiu,

What is the exact backfocus of QHY16200A + CFW7? How about QHY16200 + CFW7 + included OAG? Is it the same with CFW5?
I've ordered QHY16200A few days ago from Korean dealer, and now designing a custom adapter for Tak FSQ.

Youn.


Hello,   We will update our user manual and add the 7CFW context soon.

Best regards,
Qiu Hongyun
Qiu Hongyun

Re: Optic Back Focal Path data
« Reply #16 on: April 07, 2018, 03:19:54 PM »
Hello,
        For QHY183C please look at the user manual of it. For QHY168C Our mechanical engineer is doing a drawing these days and we will post on the website of QHY168C in next week.

Best regards,
Qiu Hongyun

Please post the exact measurement for the QHY168C. The drawing shows plus minus .5 mm. We need an exact measurement to be able to achieve correct backfocus please. what was the results of this?
" In order to get precision back focal data. We setup an optic system to measure it. This optic system can measure the silicon chip surface and any other surface with optic method. The distance is also includes all the index of the glass. It should be better than the mechanical measurement."
« Last Edit: April 07, 2018, 03:22:29 PM by Antman »

Re: Optic Back Focal Path data
« Reply #17 on: June 16, 2018, 11:41:58 PM »
Thanks that's great.  ;)

Re: Optic Back Focal Path data
« Reply #18 on: June 16, 2018, 11:42:57 PM »
Thanks that's great.  ;)


Re: Optic Back Focal Path data
« Reply #20 on: July 27, 2018, 05:27:51 AM »
Great information!  thank you  ;)

axlns

Re: Optic Back Focal Path data
« Reply #21 on: May 18, 2020, 03:52:29 AM »
...
The data does not include the filter's index if the camera has build-in colorwheel.
...
QHY695A with thin front part  =  29.5mm
QHY695A with standard front part = 33mm
...

Hello. Thanks for this info, this is helpful. I have 2 questions

1. How can I determine if my QHY695A with thin front part or with standard front part?
2. Can you help me determining filter's index? I use a set of LRGB and NB Optolong unmounted 36mm filters.

Thank you!