I used Registar to create this composite of Hyperstar I and Hyperstar III data taken of the Whirlpool galaxy, M51. Around 3 and a half hours of f#2 data taken with an 11″ SCT. Clearly worth getting even more data in this region.
This entry was posted on Monday, February 6th, 2012 at 10:33 am and is filed under Hyperstar and SXV-H9C, Hyperstar and SXVF-M25C. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.
Very impressed with your hyperstar images. Is there a trick to your sharp clean stars? I have a hyperstar 3 on order.
The majority of HS images I have found online, the stars are not very well shaped.
There are two things to get perfect star shapes. One is very good collimation which means CCDInspector and very accurate tuning of the HSIII. The other is to pay attention to what you have in front of the corrector plate doing the imaging. If the camera is a nice round cross-section like a Starlight Xpress camera then you aren’t going to get any funny diffraction effects leading to odd shaped stars. If it is a DSLR or a lumpy American CCD camera, then you can expect odd shaped stars as a result.
Thanks for the info! I’m pretty fussy about collimation and focus. I always try for the best possible. And I’ll be using a QHY CCD with the Hyperstar 3 so I guess my stars should be good based on your answer! Very informative site overall. I’ve visited several times now and enjoy reading your posts. Thanks again! Cheers.
Shawn / Canada
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