Hemisphere:  Northern  ·  Contains:  Cigar Galaxy  ·  Cigar galaxy  ·  M 82  ·  M82  ·  NGC 3034
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Imaging telescopes or lenses: Planewave CDK24

Imaging cameras: FLI Proline 16803

Mounts: Planewave L600

Guiding cameras: Starlight Xpress Ultrastar

Focal reducers: None

Software: Photoshop CS3  ·  PixInsight 1.8  ·  PHD Guiding 2  ·  CCDWare CCD Inspector  ·  Planewave PWI4  ·  Planewave PWI3  ·  Maxim DL6  ·  Sequence Generator Pro

Filters: Astrodon 50 mm 5 nm Ha  ·  Astrodon 50mm B  ·  Astrodon 50mm R  ·  Astrodon 50mm L

Accessory: FLI CFW-5-7  ·  Astrodon Monster MOAG  ·  Hedrick Focuser  ·  Planewave Delta-T  ·  Planewave EFA

Dates:Feb. 16, 2020Feb. 24, 2020March 29, 2020

Astrodon 50 mm 5 nm Ha: 27x900" -30C bin 1x1
Astrodon 50mm B: 8x900" -30C bin 1x1
Astrodon 50mm L: 15x900" -30C bin 1x1
Astrodon 50mm R: 5x900" -30C bin 1x1

Integration: 13.8 hours

Darks: ~20

Flats: ~80

Flat darks: ~80

Bias: ~20

Avg. Moon age: 9.36 days

Avg. Moon phase: 22.26%

Mean SQM: 21.30

Mean FWHM: 2.30

Astrometry.net job: 3367329

RA center: 9h 55' 55"

DEC center: +69° 40' 16"

Pixel scale: 0.468 arcsec/pixel

Orientation: -178.563 degrees

Field radius: 0.229 degrees

Resolution: 2654x2310

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard


Finally found a short clearing to add a bit more data to what I collected last month.

My main reference was Adam Block's with 28 hours of Ha in a 32"...

Adam Block 32-inch HaLRGB: 28H:8.3H:1.7H:1.7H:1.7H

What you see here is HaLRB: 6.7H:3.7H:1.2H:2H.

Unfortunately the weather turned before I could get G, so I used G = .8B + .2R.

Interesting to note that 6.7 hours of Ha didn't really have much more structure than 3.7 hours of L. I included the Ha for the "starburst" color effect that seems so popular.



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