IC 1795
See 2021 version of this area HERE
IC 1795 (sometimes known as The Fishhead Nebula) is an emission nebula located in the constellation of Cassiopeia. Close to the double cluster of Perseus and the Heart Nebula. It is about 6000 light years from us, This image covers a field of about 70 light years across . It is relatively easy to see in a small telescope and is located in a very rich environment with IC 1805 and IC 1848, as well as many open clusters.
The above image is a 2019 rendition of the 2016 data.
This image was taken using the 1.6x extender which gives an effective scope focal length of 848mm @ f/8.
Imaging telescopes or lenses: Takahashi FSQ106ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2
Guiding telescopes or lenses: Takahashi FS 60 CB
Guiding cameras: QHY CCD QHY 5 II
Focal extender: Takahashi QE 1.6x
Software: PHD 2, Pleiades Astrophoto PixInsight , Sequence Generator Pro SGP
Filters: Astrodon Ha 3nm, Astrodon OIII 3nm, Astrodon SII 3nm,
Accessories: Robofocus Focuser, ATIK EFW2
Original Resolution: 1968 x 1320
Dates: 4th Oct - 11th Oct '16
Frames:
Astrodon Ha 3nm: 22x1200" bin 2x2
Astrodon OIII 3nm: 10x1200" bin 2x2
Astrodon SII 3nm: 10x1200" bin 2x2
Integration: 14 Hours
Center (RA, Dec):(36.852, 62.090)
Center (RA, hms):02h 27m 24.552s
Center (Dec, dms):+62° 05' 23.010"
Size:32.9 x 32.9 arcmin
Radius:0.388 deg
Pixel scale:1.5 arcsec/pixel
Orientation:Up is 178 degrees E of N
The above image is a 2019 rendition of the 2016 data.
This image was taken using the 1.6x extender which gives an effective scope focal length of 848mm @ f/8.
Imaging telescopes or lenses: Takahashi FSQ106ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2
Guiding telescopes or lenses: Takahashi FS 60 CB
Guiding cameras: QHY CCD QHY 5 II
Focal extender: Takahashi QE 1.6x
Software: PHD 2, Pleiades Astrophoto PixInsight , Sequence Generator Pro SGP
Filters: Astrodon Ha 3nm, Astrodon OIII 3nm, Astrodon SII 3nm,
Accessories: Robofocus Focuser, ATIK EFW2
Original Resolution: 1968 x 1320
Dates: 4th Oct - 11th Oct '16
Frames:
Astrodon Ha 3nm: 22x1200" bin 2x2
Astrodon OIII 3nm: 10x1200" bin 2x2
Astrodon SII 3nm: 10x1200" bin 2x2
Integration: 14 Hours
Center (RA, Dec):(36.852, 62.090)
Center (RA, hms):02h 27m 24.552s
Center (Dec, dms):+62° 05' 23.010"
Size:32.9 x 32.9 arcmin
Radius:0.388 deg
Pixel scale:1.5 arcsec/pixel
Orientation:Up is 178 degrees E of N
Sky Plot
Annotated Image
Showing the FoV of the Original Image in Mono
The below image is still the NB data but mixed to bring it closer to RGB (visual) colours - the strong Ha showing up as red.
R = 0.8*Ha + 0.2*SII
G = OIII
B = 0.85*OIII + 0.15*Ha
R = 0.8*Ha + 0.2*SII
G = OIII
B = 0.85*OIII + 0.15*Ha
