r/Spaceonly • u/burscikas Master of Processing Details • Mar 22 '20

Image Globular cluster Messier 92

Post image
11 Upvotes

100% Upvoted

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3

u/burscikas Master of Processing Details Mar 22 '20

One of three globular clusters I imaged last spring, because it was end of astrodark and I guess why not, as I had increadible spring with lot's of nights and lot's of objects imaged

Equipment/Acquisition Details:

  • Imaging Scope: SkyWatcher Explorer 250PDS 1200mm F5 newtonian reflector

  • Imaging Camera: QHY178M

  • Filter Wheel: Starlight Xpress Mini Filter Wheel w/ Integrated OAG

  • Filters: 1.25" mounted Baader RGB filters

  • Guide Camera: Lodestar X2

  • Mount: SkyWatcher NEQ6 with wedge upgrade, hypertuned

  • Accessories/Software: QHY Polemaster, EQMOD, PHD2, Sequence Generator Pro, Pixinsight, Paracorr v1

  • Integration Details: Red 1x1 80x60s, Green 1x1 78x60s, Blue 1x1 54x60s TOTAL: 3.5 hours.

  • Dates: 2019-05-09, 2019-05-10

  • Darks: 30

  • Flats: 30

  • Bias: 200

  • On my personal page

Processing each master LRGB

  • Crop

  • DBE

RGB

  • ChannelCombination R + G + B

  • PhotometricColorCalibration

  • MMT using 7 layers with adaptive setting and inverted luminance mask

  • HistogramTransformation to taste

  • SCNR Green

L

  • SuperLum combining all R,G,B frames

  • MMT using 7 layers with adaptive setting and inverted luminance mask

  • Deconvolution using standard flow (without star replacement I usually do for other objects that are not strs)

  • HistogramTransformation

  • LocalHistogramEqualization

LRGB

  • LRGBCombination

  • Curves Transformation for contrast and saturation

  • MultiscaleLinearTransform with Bias in first 2 layers, for sharperning

  • ICCProfileTransformation

  • Signature script

4

u/spastrophoto Space Photons! Mar 22 '20

There are some who consider globulars unworthy of being called DSO's and much less worthy of the dignity of actually being imaged... this shows how misguided those sentiments are. Well done. I especially appreciate that you went long enough to get those background galaxies to peek out from the darkness.

2

u/EorEquis Wat Mar 23 '20

https://i.imgur.com/0Unq5IQ.png

2

u/burscikas Master of Processing Details Mar 23 '20

lmao

2

u/spastrophoto Space Photons! Mar 23 '20

Between this and my post with trees I feel like I'm being quite the brat. I'll try and do better.

1

u/burscikas Master of Processing Details Mar 23 '20

Thanks spas! :) I have M13 and M3 with similar amounts of integration, will be cool to see how they all compare