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CCD Images - Session 407 (2009-12-25)

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Objects Session Notes
Bullet PGC 100170 - Galaxy (Dwingeloo 1)
Bullet PGC 2666 - Dwarf Spheroidal Galaxy (Andromeda I) - 2.9 mly
Bullet Variable Stars
Bullet Photometric Monitoring - Variables
- RX And, W And, Z And, CI Cyg, SS Cyg, BL Lac, CY Lyr, RU Peg, DY Per, GK Per, V Sge, RR Tau

U And, FG Sge attempts (failed due to condensation/frost on corrector lens)
Bullet Astrometric Monitoring - Nearby Stars
- Ross 248 (HH And), Groombridge 34, 
 
- Evening session (4.3 hr). Very cold (minimum temperature -3.5 degC)

Autostar II/LX200 performing normally
- Session operated under semi-automated control
- Ambient Temperature:  Falling to -3.5 degC (minimum)
- CCD operation -30 degC (at 62% average cooling).  
- main objectives of the session was to acquire images of key selected stars for ongoing photometric and astrometric analysis, and test new off-chip binning functionality with increased Gain
- secondary objective was to acquire images of a few Local Group and other nearby Galaxies.   Some results (PGC 143, PGC 14241, PGC 15439, PGC 2544) poor due to Moonlight and condensation/frost on corrector lens.
-

PGC 100170 - Galaxy (Dwingeloo 1)

  

PGC 100170 / Dwingeloo 1  (Cassiopeia)
PGC 100170 / Dwingeloo 1 is a member of the Maffei I Galaxy Group.  
It lies in the plane of the Milky Way and is largely obscured by dust.
Imaging attempt made through Infrared Filter to increase chance of 
seeing the galaxy

Image

CCD Image (35% size, cropped)
5 x 120s exposure, 2x2 binning, I Filter
2009-12-25 20:34h UT (#407330-34)
12" LX200R  (at f/5.7) + ST-10XME

  

PGC 100170 - detail
Central core of the galaxy is just visible in the centre of image.

Bright star in bottom left is the double star Struve 321 
(components Mag +9.1 & +10.1, separation 19 arc sec)

Image

CCD Image (cropped)
Image details as above
 

Comparison of images of PGC 100170

Image through 12" LX200R
Aberdeenshire, UK

 Image from a big telescope at
Isaac Newton Telescope Group, 
La Palma, Spain

Image Image

  CCD Image
Slightly smoothed, Alternate
Black/White adjustment
Image details as above
12" LX200R  (at f/5.7) + ST-10XME

Image by S. Hughes & S. Maddox 
(IoA, Cambridge) et al.,
 Astronomy Picture of the Day, 2000 January 9
image at apod.nasa.gov
details at apod.nasa.gov 
Isaac Newton Telescope

 

Earlier Imaging Attempt at PGC 100170 / Dwingeloo 1  (2006)

Image

CCD Image
2 x 3 min exposure, 2x2 binning (average combine), I Filter
2006-09-01 22:58 h UT (#136089-91)
8" LX200 Classic + ST-7E

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PGC 2666 - Dwarf Spheroidal Galaxy (Andromeda I) - 2.9 mly

  

PGC 2666 / Andromeda I (Andromeda)
Attempted image of Local Group Galaxy
expected location of galaxy is circled

Image

Annotated CCD Image (cropped)
3 x 120s exposure (average combine), 3x3 binning, I Filter
2009-12-26 21:02h UT (#407346-48)
12" LX200R  (at f/5.7) + ST-10XME

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Variable Stars

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This Web Page: CCD Images - Session 407  (2009-12-25)
Last Updated : 2019-08-10
Site Owner : David Richards
Home Page : David's Astronomy Web Site