Hemisphere:  Northern  ·  Contains:  Crescent nebula  ·  IC 4996  ·  NGC 6888
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Crescent Nebula and Soap Bubble Nebula in HOO, 


            Dan Gallo
Crescent Nebula and Soap Bubble Nebula in HOO
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Technical card

Imaging telescopes or lenses: Celestron Rowe-Ackermann Schmidt Astrograph 11"

Imaging cameras: ZWO ASI 1600MM Cooled

Mounts: Losmandy G11 Gemini 2

Software: Sequence Generator Pro  ·  Lightroom  ·  PixInsight

Dates:June 23, 2019

Baader f/2 Highspeed 2" H-Alpha Filter: 45x60" -15C bin 1x1
Baader f/2 Highspeed 2" OIII Filter: 45x60" -15C bin 1x1

Integration: 1.5 hours

Darks: ~50

Avg. Moon age: 20.45 days

Avg. Moon phase: 67.72%

Bortle Dark-Sky Scale: 8.00

Basic astrometry details

Astrometry.net job: 3250894

RA center: 20h 13' 37"

DEC center: +38° 7' 19"

Pixel scale: 1.808 arcsec/pixel

Orientation: 27.531 degrees

Field radius: 1.007 degrees

Resolution: 2420x3200

Locations: Home, Foster City, California, United States

Data source: Backyard


I had another go at imaging the Crescent Nebula with the RASA 11", this time using the ASI1600MM-C and Baader highspeed narrowband filters (Ha and OIII).
If you look carefully, you can just about see the Soap Bubble Nebula in the lower left of the image.



Dan Gallo
License: None (All rights reserved)

Sky plot

Sky plot


Crescent Nebula and Soap Bubble Nebula in HOO, 


            Dan Gallo

In these public groups

Celestron RASA