Imaging telescopes or lenses: Stellarvue SVT 130T
Imaging cameras: SBIG STT 8300M
Mounts: Astro-Physics Mach1AP GTO CP4
Guiding telescopes or lenses: Stellarvue SVT 130T
Guiding cameras: SBIG STT 8300M
Software: Software Bisque TheSky X Professional · photoshop · Starnet ++ · CCDWare FocusMax V.4 · PixInsight · Straton Destar 2.0 · Topaz Denoise AI · 3D LUT Creator · Maxim DL · EQMOD · DC-3 Dreams ACP Observatory Control Software · Astro-Physics Command Center (APCC) Software · Annie's Astro Actions Version 7.0
Filters: Astrodon H-alpha 5nm · Astrodon Blue Tru-Balance E-Series Gen 2
Accessory: Moonlite Nitecrawler 3.5 · Tolga Astro Alnitak Flat-Man Electroluminescent Flat Fielding Device
Dates:Feb. 18, 2021
Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 9x240"
Astrodon Green Tru-Balance E-Series Gen 2: 9x240"
Astrodon H-alpha 5nm: 9x240"
Astrodon Red Tru-Balance E-Series Generation 2: 9x240"
Integration: 2.4 hours
Avg. Moon age: 6.24 days
Avg. Moon phase: 38.01%
Astrometry.net job: 4230052
RA center: 6h 21' 42"
DEC center: -12° 59' 9"
Pixel scale: 1.220 arcsec/pixel
Orientation: 178.189 degrees
Field radius: 0.120 degrees
Resolution: 500x500
Locations: Stanford Faculty Observatory, Stanford, California, United States
Data source: Own remote observatory
Remote source: Non-commercial independent facility
Looking to fill empty imaging time decided to check out some planetary nebulae in view. This one is obviously very small but had some interesting history. I could get not details out of it even with H-alpha. But less resolution than cited below.
Reference:
High-spatial-resolution observation of the small planetary nebula IC 2165.
Hua, C. -T.; Grundseth, B.
Abstract
The use of a rather large equivalent focal length in an attempt to obtain two-dimensional monochromatic images of the planetary nebula IC 2165, catalogued as a small, high-excitation object of 8 arcsec diameter, with a very faint and very hot central star, is reported. Due to the high spatial resolution of 0.047 arcsec/pixel and the seeing of 0.8 arcsec, detailed structures less than 1 arcsec could be distinguished. The nebula exhibits a more or less homogeneous spheroidal H-alpha image, while the forbidden N II isophote map displays four symmetrical condensations well separated in two lobes. It is concluded that the relative enhancement of forbidden N II in the peripheral zones could be explained by an abundance effect together with the strong collisional excitation due to the high electron density.
Publication:
Astronomical Journal, Vol. 90, p. 2055-2060 (1985)
Pub Date:
October 1985
DOI:
10.1086/113912
Also:
https://www.researchgate.net/publication/260850161_The_latest_eruption_of_planetary_nebula_IC_2165
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