Celestial hemisphere:  Northern  ·  Constellation: Cancer (Cnc)  ·  Contains:  Beehive  ·  M 44  ·  NGC 2632  ·  Praesepe Cluster
Getting plate-solving status, please wait...
M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
M44 - gibbous Moon about 10 degrees away - quite a challenge
Powered byPixInsight

M44 - gibbous Moon about 10 degrees away - quite a challenge

Getting plate-solving status, please wait...
M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
M44 - gibbous Moon about 10 degrees away - quite a challenge
Powered byPixInsight

M44 - gibbous Moon about 10 degrees away - quite a challenge

Equipment

Loading...

Acquisition details

Loading...

Description

CN has an M44 "contest".  (The winner is chosen randomly).  I got an available clear night, only the Moon was almost on top of the cluster.  An initial stretch of the calibrated lights showed a bizarre t-shaped gradient, unlike anything I had ever dealt with.   So, this was quite a journey.

The final version represents my first use of LocalNormalization.    The gradient was only slightly reduced, but LN made gradient reduction (no way could I eliminate it) much more effective.  I had to throw away the rulebook on DBE.  More samples was the ticket, not the usual "less is more" thing.

I'm pleased with the final version.  In skies with a limiting visual magnitude of 4, I got a number of faint fuzzies also.  NGC 24656 is clearly visible (at least when zooming in in PixInsight), that's a mag 14.8 galaxy.  The wonders of DSO AP.  <smile>

Comments

Revisions

  • M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
    Original
  • M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
    B
  • M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
    C
  • M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
    D
  • Final
    M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25
    E

Sky plot

Sky plot

Histogram

M44 - gibbous Moon about 10 degrees away - quite a challenge, bobzeq25