Hemisphere:  Northern
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Lower's Nebula (Sharpless 261), 


            Scott Tucker
Lower's Nebula (Sharpless 261)
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Lower's Nebula (Sharpless 261)

Technical card

Imaging telescopes or lenses: SkyWatcher Esprit 100 ED f/5.5 APO  ·  Celestron 9.25 SCT

Imaging cameras: ZWO ASI294MC Pro  ·  Atik 490EX monochrome

Mounts: Celestron CGX

Guiding cameras: ZWO ASI174Mini

Software: MaxIm DL Pro 6  ·  photoshop cc  ·  Pleiades Astrophoto PixInsight

Filters: IDAS NB1 Nebula Booster

Accessory: Starizona Hyperstar 9.25"

Dates:Feb. 27, 2019

Baader H-Alpha 7nm Baader H-Alpha 7nm: 95x120" -20C bin 1x1
IDAS NB1 Nebula Booster: 39x300" (gain: 120.00) -25C bin 1x1

Integration: 6.4 hours

Avg. Moon age: 23.09 days

Avg. Moon phase: 40.04%

Mean SQM: 20.10

Basic astrometry details

Astrometry.net job: 2555924

RA center: 6h 8' 59"

DEC center: +15° 42' 25"

Pixel scale: 2.896 arcsec/pixel

Orientation: 358.587 degrees

Field radius: 0.835 degrees

Resolution: 1600x1322

Locations: Backyard, Tucson, AZ, United States

Data source: Backyard


Captured with a dual telescope setup. HyperStar C9.25 f/2.2 with Atik 490EX camera and Baader high-speed H-alpha filter with 2-minute subs, and SkyWatcher Esprit 100 f/4.3 with ZWO ASI294 camera and IDAS NB1 filter with 5-minute subs.



Scott Tucker
License: None (All rights reserved)

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Lower's Nebula (Sharpless 261), 


            Scott Tucker