Comments on: Abell 426, The Perseus Galaxy Cluster https://astrodoc.ca/abell-426-the-perseus-galaxy-cluster/ Astrodoc.ca - Images of the Universe Wed, 04 Mar 2015 02:55:49 +0000 hourly 1 https://wordpress.org/?v=7.0.2 By: Ron Brecher https://astrodoc.ca/abell-426-the-perseus-galaxy-cluster/#comment-3755 Sat, 21 Feb 2015 18:39:45 +0000 http://astrodoc.ca/?p=8201#comment-3755 In reply to John Laning.

I disagree that a larger scope is required. This is a huge cluster, and requires a large field. My telescope operates at either 900mm or 1700 mm. It has given me fine images of M51, 81/982 and 4565, all of which you will find on this website. I’ve had both of the scopes you mention. I never got on well with the AT8, but really enjoyed the 11″ SCT for visual. I did not find it fast enough for astrophotography. Even f/6.8 is on the slow side.

Thank you for your feedback!

Clear skies,
Ron

]]> By: luciano commissari https://astrodoc.ca/abell-426-the-perseus-galaxy-cluster/#comment-3752 Fri, 20 Feb 2015 07:23:17 +0000 http://astrodoc.ca/?p=8201#comment-3752 large beautiful photo, congratulations

]]> By: John Laning https://astrodoc.ca/abell-426-the-perseus-galaxy-cluster/#comment-3749 Thu, 19 Feb 2015 18:43:38 +0000 http://astrodoc.ca/?p=8201#comment-3749 Do you have a longer focal length scope for galaxy clusters, I think 900mm is to short. I have a AT8RC at 1600mm
and my galaxies are fairly small even for M-51,81, and NGC4565. I have a 11″ Celestron at 2800mm, but have not got my CGEPro to polar align yet due to my mistakes choosing drift alignment stars. John

]]>