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NGC891 Galaxy

Other Verisons: Click on above image to cycle through versions of the image.

• Negative image
• Negative image with labels
• Positive image

Objects Information

• NGC891 Galaxy in constellation Andromeda
• SEDS NGC 891
• Wikipedia NGC 891
• Astronomy Picture of the Day Spirals On Edge 2001 May 10
• NGC891 in NASA/IPAC Extragalactic database
• NGC/IC Project

38 Galaxies That Range from 13.18 Magnitude to 17 Magnitude

• NGC898 in NASA/IPAC Extragalactic database
• NGC906 in NASA/IPAC Extragalactic database, nice sprial galaxy
• NGC909 in NASA/IPAC Extragalactic database
• NGC910 in NASA/IPAC Extragalactic database
• NGC911 in NASA/IPAC Extragalactic database
• NGC912 in NASA/IPAC Extragalactic database
• NGC913 in NASA/IPAC Extragalactic database
• NGC914 in NASA/IPAC Extragalactic database
• NGC923 in NASA/IPAC Extragalactic database
• PGC 008844 in NASA/IPAC Extragalactic database
• PGC 008848 or CGCG538-041 in NASA/IPAC Extragalactic database
• PGC 008891 or CGCG538-044 in NASA/IPAC Extragalactic database
• PGC 008939 in NASA/IPAC Extragalactic database
• PGC 008947 in NASA/IPAC Extragalactic database
• PGC 008948 in NASA/IPAC Extragalactic database
• PGC 008955 in NASA/IPAC Extragalactic database
• PGC 009017 or CGCG538-050 in NASA/IPAC Extragalactic database
• PGC 009042 or CGCG538-054 in NASA/IPAC Extragalactic database
• PGC 009067 in NASA/IPAC Extragalactic database
• PGC 009068 in NASA/IPAC Extragalactic database
• PGC 009101 in NASA/IPAC Extragalactic database
• PGC 009108 in NASA/IPAC Extragalactic database
• PGC 009150 in NASA/IPAC Extragalactic database
• PGC 009151 in NASA/IPAC Extragalactic database
• PGC 009180 in NASA/IPAC Extragalactic database
• PGC 009203 in NASA/IPAC Extragalactic database
• PGC 009274 in NASA/IPAC Extragalactic database
• PGC 009301 in NASA/IPAC Extragalactic database
• PGC 009312 in NASA/IPAC Extragalactic database
• PGC 009322 or CGCG 539-027 in NASA/IPAC Extragalactic database
• PGC 009348 in NASA/IPAC Extragalactic database
• PGC 009357 in NASA/IPAC Extragalactic database
• 2MFGC 01908 in NASA/IPAC Extragalactic database
• 2MASX J02204230+4216343 in NASA/IPAC Extragalactic database
• 2MASX J02263547+4245294 in NASA/IPAC Extragalactic database
• HFLLZOA F171 in NASA/IPAC Extragalactic database
• HFLLZOA F172 in NASA/IPAC Extragalactic database
• HFLLZOA F210 in NASA/IPAC Extragalactic database

Catalogs Information

• 2MASX = 2 Micron All Sky Survey Extended objects
• 2MFGC = 2MASS Flat Galaxy Catalogue
• CGCG = Catalogue of Galaxies and of Clusters of Galaxies
• HFLLZOA = Hau+Ferguson+Lahav+Lynden-Bell Zone of Avoidance Galaxies
• NGC = New General Catalogue
• PGC = Principal Galaxy Catalog (numbers 1-73197)

Image Information

• Field of view: 118 arcminutes wide x 77.1 arcminutes high
• Top image is half size, right image is full scale
• North is top and west is right
  
• Exposure: 33 images x 120 seconds per image (66 minutes total)
• CCD-TEMP: -20°C
• Astronomik Type IIc Luminance filter
• Seeing was poor: FWHM ranged from 1.7 to 3.0
• Guided

Observing Information

• OBS-Location: Oregon Star Party (OSP), OR USA
• TIME-Local of first image = 11:24 PM August 29, 2008
• TIME-Local of last image = 12:33 AM August 30, 2008

Imaging Equipment

• CCD camera: QSI 532ws-M1 (9.7mm x 14.9mm)
• Telescope: Tele Vue NP-101is APO refractor (4 inch dia., focal length = 540, f/5.4)
• Focal reducer: Tele Vue NPR-1073 0.8X (focal length = 432, f/4.3, 3.24 arcsec/pix)
• Telescope mount: Orion Telescopes and Binoculars Atlas EQ-G Mount with GoTo Controller
• Tripod: Losmandy G-11 tripod
• Guide camera: Orion Telescopes and Binoculars StarShoot AutoGuider
• Guide scope: 40mm dia., 250mm focal length
• Guiding software: Stark Labs PHD Guiding

Imaging Processing

• Image was processed for M27 details and faint stars.
• AIP4WIN V2.2
• CCDWare CCDStack V1.4
• Diffraction Limited MaxIm DL V5.03
• Adobe Photoshop CS3 10.0.1

Monitor Test Pattern

The following test pattern is to help you adjust your monitor to best view the CCD astro images. The test pattern is used for adjusting monitor brightness, and contrast. Adjust monitor brightness and contrast to see all 16 gray scale levels. The most important adjustment when viewing astro images is to see the differences in all of the black bands.

© 1998-2008 David Haworth