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CCD Images - Session 263 (2008-02-12)

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Objects Session Notes
NGC 2770 - Spiral Galaxy & Supernovae 2007uy and 2008D
NGC 1555 (Hind's Variable Nebula)
NGC 4490 - Spiral Galaxy ('Cocoon Galaxy')
NGC 5829 - Spiral Galaxy with Supernova 2008B
NGC 5394/5395, ARP 84  ("Heron")
Astrometric & Photometric Monitoring
 - SS Cyg, U Gem, RZ LMi (dwarf nova)
- U And, W And, SS Her, U Her  (mira variables)
- BL Lac (Blazar)
- RX And, Z And, TT Ari, KR Aur, AQ CMi, SY Cnc, AM CVn, Y CVn, DY Per, SZ Her, AD Leo, CY Lur, TZ Lyr, FU Ori, U Mon, DY Per, RR Tau, ER UMa, SU UMa  (variables)
- 61 Cyg, Ross 248, Gliese 1245, Teegardens Star (Nearby Stars)


- All night session (12.3hr). Operated under automated control for bulk of session, with occasional remote control monitoring (middle section)
- CCD operation of -20 degC (at 52% average cooling). 
- main objective was to acquire images of certain selected stars for ongoing photometric, and astrometric measurements in particular Z And and RX And, plus a number of gallery images.

NGC 2770 - Spiral Galaxy & Supernovae 2007uy and 2008D

NGC 2770 (Lynx) with SN 2007uy & SN 2008D

CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter 
2008-02-12 21:45 hUT (#263192-98)
 

NGC 2770 with SN 2007uy & SN 2008D - detail
Image below (2008-02-12.91) was taken 
43 days after 2007uy discovery &
32.5 days after 2008D discovery
2007uy : mag ?? (C)
2008D : mag  too faint to measure

 
Annotated CCD Image (250% size)
Image details as above
  

NGC 2770 with SN 2007uy & SN 2008D - 
earlier image from 2008-01-17
Image below (2008-01-17.98) was taken 
17.3 days after 2007uy discovery &
6.6 days after 2008D discovery
2007uy : mag +14.8 (C)
2008D : mag  too faint to measure

 
Annotated CCD Image (250% size)
Image details as above
 

2007uy (Type 1b) was discovered 2007/12/31.669 by Yoji Hirose
Magnitude at discovery was  +17.2 (C filter). 
(Rochester Supernova site | Discovery Image | Reference Image)

2008D (Type 1c) was discovered 2008/01/11.42 
by Lick Observatory Supernova Search
Magnitude at discovery was  +17.5 (C filter). 
(Rochester Supernova site | Discovery Image | Reference Image)

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NGC 1555 - Nebula ("Hind's Variable Nebula")

NGC 1555 - "Hind's Variable Nebula" (Taurus) 
The Nebula is also known as 
"Struve's Lost Nebula" and "Burnham's Nebula"
The adjacent bright star is variable star T Tau
CCD Image
5 x 180s exposure (average combine), 
2x2 binning, C Filter, Linear brightness scaling
2008-02-12 22:54 hUT (#263234-38)
 

Hind's Variable Nebula - detail
 
CCD Image (200% size)
Image details as above
 

Hind's Variable Nebula - detail from 2007-11-28
 
CCD Image (200% size)
5 x 180s exposure (average combine), 
2x2 binning, C Filter, Linear brightness scaling
2007-11-28 21:53 hUT (#237109-13)
 

Hind's Variable Nebula - detail from 2007-10-05
 
CCD Image (200% size)
5 x 180s exposure (average combine), 
2x2 binning, C Filter, Linear brightness scaling
2007-10-05 04:38 hUT (#219053-57)
 

Hind's Variable Nebula - detail from 2007-09-11
 
CCD Image (200% size)
6 x 180s exposure (average combine), 
2x2 binning, C Filter, Linear brightness scaling, Cropped)
2007-09-11 01:05 hUT (#211121-26)

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NGC 4490 - Spiral Galaxy ('Cocoon Galaxy')

NGC 4490 & NGC 4485 (Canes Venatici)
Annotated CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter 
2008-02-13 04:00 hUT (#263704-10)
  

Note : 19.2 days after this image was taken a Type II
supernova (SN 2008ax) was discovered in NGC 4490 
by LOSS; Koichi Itagaki on 2008/03/03.45

NGC 4490  - later image with SN2008ax (2008-03-08)
Image below taken 4.6 days after SN2008ax discovery.

 
Annotated CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter 
2008-03-08 00:48 hUT (#273136-42)

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NGC 5829 - Spiral Galaxy with Supernova 2008 B

NGC 5829  with Supernova 2008B (Bootes)
2008B is a Type IIn Supernova discovered in NGC 5829 
on 2008/01/02.84 by Koichi Itagaki
 at ? mag +16.6 
(Rochester Supernova site | Discovery Image | )
CCD Image
5 x 120s exposure (average combine), 
2x2 binning, C Filter,
2008-02-13 04:17 hUT (#263715-19)

 

NGC 5829 with Supernova 2008B - detail
NGC 5829 / SN 2008b - image on 2008-01-12
2008-01-12.20, 9.4 days after discovery. 
2008B measured magnitude +16.0 (C)		 NGC 5829 - one month later (2008-02-13)
2008-02-13.11, 40.3 days after discovery. 
2008B now significantly faded 
 
Annotated CCD Image (250% size, cropped)
5 x 120s exposure (average combine), 
2x2 binning, C Filter,
2008-01-12 04:45h UT (#252525-29)		 CCD Image (250% size, cropped)
4 x 120s exposure (average combine), 
2x2 binning, C Filter,
2008-02-13 04:17h UT (#262288-91)

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NGC 5394/5395, ARP 84 - Spiral galaxy with HSB companion on arm ("Heron")

NGC 5394 and NGC 5395 / ARP 84  (Canes Venatici)  
CCD Image 
5 x 120s exposure (average combine), 2x2 binning, C Filter
2008-03-13 06:19h UT (#263800-04)
[Annotated Image of NGC 5394/5395 from 2008-03-10 ]
  
 NGC 5394, NGC 5395 / ARP 84 - detail
CCD  Image (200% enlarged, cropped)
(Image details as above)
  
 
Negative CCD  Image (200% enlarged, cropped)
(Image details as above)

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This Web Page: CCD Images - Session 263  (2008-02-12)
Last Updated : 2008-04-12
Site Owner : David Richards
Home Page : David's Astronomy Web Site