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Friday, October 9, 2020

New photo, Sharpless 126 in lacerta


I haven't seen many pictures about this large and diffused nebula before. 
This is a very good target for my photon hungry wider field setup,


Sharpless 126, Sh2-126
Click for a large image

A bicolor image from the light from ionized elements hydrogen (H-alpha) and oxygen (O-III)


Sharpless 126 (Sh2-126) is a large emission nebula in Lacerta. The source of its ionization is the ultraviolet radiation from the star 10 Lacertae.

This region with its weak nebulous filaments is part of a huge star forming region, 1200 light years away from earth.

H-alpha alone
Click for a large image

Technical details

Processing workflow

Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 33 iterations, added at 50% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
Tokina 300 mm AT-x f2.8 camera lens

10-micron 1000

Cameras and filters
Imaging camera Apogee Alta U16 and Apogee seven slot filter wheel
Guider camera, Lodestar x 2 and an old spotting scope of Meade LX200

Astrodon filters,
5nm H-alpha 3nm S-II and 3nm O-III

Total exposure time

H-alpha, 9 x 1200 s, binned 1x1 = 3 h
O-III, 1 x 1200 s, binned 1x1= 20 min.

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