|
Objects Session Notes
Mira - variable star PLN 217+14 - Planetary Nebula NGC 3344 - Spiral Galaxy NGC 3521 - Spiral Galaxy Astrometric & Photometric Monitoring
- SS Cyg, U Gem, (dwarf novae)
- HIP 4429 (suspected variable)
- U And, W And, Mira (Mira variables)
- Z And, DV UMa, ER UMa, U Mon, RZ LMi (variables)
- BL Lac (BL Lac blazer)
- HH And, Groombridge 34 (Nearby Stars)
- AXP 1E 2259+586, AXP 4U 0142+615 (AXP stars)
3.8 hr session cut short by deteriorating sky conditions - CCD operation of -25 degC (at 69% average cooling). . - the other main objective was to acquire images for photometric monitoring of the variables stars U And, W And, SS Cyg and a suspected variable HIP 4429. - opportunity was taken to acquire some exploratory images of U Gem, RZ LMi and DV UMa which may be added to future variable star monitoring. - More Notes -
Mira (Cetus) - prototype Mira variable |
||
Images of Mira though BVRI filters showing distinct
brightening compared with images from 74 days earlier (artifacts are caused by extreme brightness of the star, as light passes through the telescope's optics) |
||
CCD Image Montage (BVRI filter bands) 2x2 binning, cropped 2006-12-05 21:57h UT (#158169-72) |
CCD Image Montage (BVRI filter bands) 2x2 binning, cropped 2007-02-17 20:19h UT (#176040-43) |
Back to Top
PLN 217+14 (Canis Minor) |
|
CCD Image 5 x 120s exposure (average combine), 2x2 binning, C filter, 2007-02-17 21:51h UT (#176124-28) |
Back to Top
NGC 3344 (Leo Minor) |
|
CCD Image 7 x 180s exposure (average combine), 2x2 binning, C filter, 2007-02-18 00:01h UT (#176211-17) |
|
NGC 3344 - false colour |
|
CCD Image Log brightness scaling, Inverse Spectrum (details as above) |
Back to Top
NGC 3521 (Leo) |
|
CCD Image 7 x 180s exposure (average combine), 2x2 binning, C filter, 2007-02-18 00:25h UT (#176221-27) |
|
NGC 3521 - false colour |
|
CCD Image Square Root brightness scaling, Inverse Spectrum (details as above) |
Back to Top
Images collected for Astrometric Monitoring
of Nearby Stars Project
Images collected for Photometric Monitoring
of Variable Stars
Images collected for Photometric Monitoring of HD 5501/HD5513
Back to Top
This Web Page: | CCD Images - Session 176 (2007-02-17) |
Last Updated : | 2023-04-17 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |