"Visual perception" Palette


HST Palette


Sh2-170 (Small Rosette Nebula)

Located close to the much more prominent NGC 7822, this small Sharpless object is not a common imaging target out there these days. Sh 2-170 is in the vicinity of the Cas OB5 supershell and about 10 000 l.y. away. The only exciting star of Sh 2-170 is DM+63 2093, which is a massive (about 30 solar masses) O8 V star.


Object Details:

Objects: Sh2-170
Constellation: Cepheus
Center of field: RA: 23h 59 m 30s Dec: +64° 20' 15"
Field dimensions: Ca 30 x 40 '


Technical Details:

Optics: 12" ASA Astrograph at F/6.8
Mount: ASA DDM 85
Camera: SBIG STL-11000M
Filters: Baader narrowband filters, Astronomik RGB filter set
Dates/Times: 28,29 November ; 2,3,4 December 2011
Location: Varna
Exposure Details: RGB = 10 m.each, Ha = 660 m., S II = 540 m.,OIII = 600 min
Subexposures: RGB = 1 minute, Narrowband = 30 min.
Acquisition: CCD Soft
Processing: PixInsight, Photoshop CS

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