Old 11-01-2011, 10:34 AM
Registered User

Carl is offline
Join Date: Apr 2006
Location: Alans Flat
Posts: 373
Bahtinov mask

Hi There
Can't get intouch with Mike ozstockman (Mike) regarding getting Bahtinov masks made up. Can someone advise me. I have a C8 focal length 2000mm but i image via a 6.3 focal reducer that make my scopes focal length 1200mm.

There is a site where you configure your own mask and download the template http://astrojargon.net/MaskGen.aspx?...ookieSupport=1
but david is not replying at the moment.

Do i configure my mask to suite 1200mm or 2000mm focal length?

Cheers Carl
Reply With Quote
Old 11-01-2011, 10:51 PM
mithrandir's Avatar
mithrandir (Andrew)
Registered User

mithrandir is offline
Join Date: Jan 2009
Location: Glenhaven
Posts: 4,161
I got mine cut for f/10. It still works at f/6.3
Reply With Quote
Old 12-01-2011, 10:25 AM
pjphilli (Peter)
Registered User

pjphilli is offline
Join Date: Jan 2008
Location: Thornleigh Sydney
Posts: 616
Hi Carl
I have sized and cut out on stiff cardboard the attached Bahnitov mask.
I was previously using one that had much coarser cutouts but I find that the new one with finer cutouts seems to improve the sharpness of the Bahnitov star image. I made ones for both my 200mm RC f8 and 80mm f6 refractor and they work fine on both.
Cheers Peter
Attached Thumbnails
Click for full-size image (bahtinovmask2.JPG)
49.9 KB24 views
Reply With Quote


Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT +10. The time is now 03:52 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
NexDome Observatories
Lunatico Astronomical
Celestron Australia
SkyWatcher Australia
Meade Australia
OzScopes Authorised Dealer
Astronomy and Electronics Centre