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OBJECT

Sharpless 254 (Sh2-254) - large emission nebula to right...other objects described in notes area, below  (image is reduced-size | other sizes:  medium , original)

Distance:  8,000 light years

Telescope Takahashi TOA-130F @ f/7.7
Mount Takahashi EM200 Temma II
Camera QSI 540wsg @ -15C
Filters Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen 2
Guider SX Lodestar
Settings 6x20min Ha, 2x5min L (bin1x1); 2x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)
Date/Location

Notes
1 February 2017 - Las Cruces, NM

This image is LHaRGB, where Ha was used in combination with Luminance and Ha:R (80:20) was used for the Red channel. This image contains 5 identifiable emission nebulas. Starting with very small object left of center and below other objects: Sh2-258. Above, to the right, and larger object is Sh2-255 (aka, IC 2162). Object of similar size and to the right of Sh2-255 is Sh2-257. Just slightly below and to the right (and smaller) is Sh2-256. The last object to the right, and the largest object, is Sh2-254.

Copyright  Jeffrey O. Johnson

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