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Contains:  NGC 1961
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NGC 1961/Arp 184, 


            Michael Lorenz
NGC 1961/Arp 184
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NGC 1961/Arp 184

Technical card

Dates:Feb. 14, 2017Feb. 15, 2017

Baader Planetarium LRGB 1.25": 32x300" -20C bin 1x1
Baader Planetarium LRGB 1.25": 60x180" -20C bin 2x2

Integration: 5.7 hours

Flats: ~40

Bias: ~70

Avg. Moon age: 18.69 days

Avg. Moon phase: 83.35%

Bortle Dark-Sky Scale: 5.00

Temperature: -2.00

Basic astrometry details job: 1465451

RA center: 5h 42' 19"

DEC center: +69° 21' 54"

Pixel scale: 1.280 arcsec/pixel

Orientation: 42.542 degrees

Field radius: 0.220 degrees

Resolution: 974x761

Data source: Traveller


Inspired by another amateur I wanted to image the field of NGC 1961/Arp 184. This was also to test my equipment as I'm heading for astro camp and the set up needs to work perfectly, which of course it does not, yet :-). New to the set up is a Motorfocus from Lacerta. With APT it works very well!
32x300s @ bin 1x1 Lum, RGB each 20x180s @ bin 2x2.
I also used the TS 2.5" full format flattener. However, a quick test without it showed, that it is not necessary with the small chip and the LZOS 123.
Version A: initial result using, PI for image preprocessing. Startools for image processing. Finalized in PI and PS with some curves.
Version B: as Version A, but with unsharp mask applied.
Version C: fully processing using PI.
I like the detail of version A&B of the galaxy. However, colors and star shape turned out better in version C.



Michael Lorenz
License: None (All rights reserved)


  • NGC 1961/Arp 184, 


            Michael Lorenz
  • Final
    NGC 1961/Arp 184, 


            Michael Lorenz
  • NGC 1961/Arp 184, 


            Michael Lorenz


Description: Unsharp masking applied.


Description: Fully processed using PI.

Sky plot

Sky plot


NGC 1961/Arp 184, 


            Michael Lorenz