View Single Post
  #8  
Old 08-02-2019, 02:07 PM
bojan's Avatar
bojan
amateur

bojan is online now
 
Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 7,112
Quote:
Originally Posted by The_bluester View Post
.... 1500mm FL, with 4.63um pixels. I am probably being harsh on it, this is an integration of only a couple of subs grabbed on the spot as opportunity knocked after I did something else and before I went to bed.

.. that means NGC 3918 is ~15 pixels in diameter on your image (8 arc", 0.57 arc"/pixl).. there is not much that can be done with available data.. you should see a hint of "ears" though...


I found the image taken with 2000mm FL (Rubinar 1000 + 2x telextender).
Attached Thumbnails
Click for full-size image (NGC3918_2000mm_crop_s.JPG)
162.9 KB29 views
Reply With Quote