Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1795  ·  IC 1805  ·  IC1795  ·  IC1805  ·  NGC 896  ·  NGC896  ·  Sh2-190
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"The Heart and the Fish", IC1805 and IC1795, 


            Brent Cooley
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"The Heart and the Fish", IC1805 and IC1795

Imaging telescopes or lenses: Stellarvue SV70T

Imaging cameras: ZWO ASI1600MM-Pro

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Stellarvue SV70T

Guiding cameras: QHYCCD QHY 5L-II-M

Focal reducers: Stellarvue SFFR-70APO

Software: Pleiades Astrophoto PinInsight 1.8.8-4 Ripley (x64)  ·  PHD2  ·  EQASCOM  ·  Sequence Generator Pro

Filters: Astrodon Ha 1.25 5nm  ·  Astrodon SII 1.25 3nm  ·  Astrodon OIII 1.25 3nm

Accessory: ZWO Off-Axis Guider  ·  ZWO EFW 1.25

Dates:Sept. 16, 2019Sept. 17, 2019Sept. 21, 2019Oct. 4, 2019Nov. 16, 2019Dec. 7, 2019

Astrodon Ha 1.25 5nm: 159x200" (gain: 200.00) -20C bin 1x1
Astrodon OIII 1.25 3nm: 118x280" (gain: 200.00) -20C bin 1x1
Astrodon SII 1.25 3nm: 138x280" (gain: 200.00) -20C bin 1x1

Integration: 28.7 hours

Darks: ~40

Flats: ~15

Flat darks: ~40

Avg. Moon age: 15.20 days

Avg. Moon phase: 73.72%

Bortle Dark-Sky Scale: 5.00

Astrometry.net job: 4261443

RA center: 2h 32' 24"

DEC center: +61° 25' 15"

Pixel scale: 1.163 arcsec/pixel

Orientation: 89.616 degrees

Field radius: 1.857 degrees

Resolution: 9210x6888

Locations: Backyard, Upstate, New York, United States

Data source: Backyard


28 hours and change of exposure and rendered in a "custom" Hubble palette color mix more appropriate for a "Heart". Since this is quite an undersampled widefield, this is drizzled 2x and deconvoluted.

IC1805 is shaped like the heart. IC1795 looks like a fish, swimming away. (bottom right).

The pair of nebula are 7,500 light years away appearing in the constellation Cassiopeia. William Herschel discovered parts of this region in 1787.

Captured in my fairly light-polluted backyard in Upstate NY (Bortle 5/6).