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CCD Images - Session 418 (2010-03-24)

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Objects Session Notes
Bullet GK Per - Variable Star, Nova (1901) : Outburst Mar 2010
Bullet HAT-P-13 - Extrasolar Two Planet Host Star
Bullet 81P/Wild - Comet
Bullet NGC 3423 - Spiral Galaxy & Supernovae 2009ls
Bullet SN 2010ba - Supernovae in anonymous galaxy
Bullet NGC 4449 - Irregular Galaxy
Bullet Photometric Monitoring - Variables
- HR Aur, SY Cnc, R CrB, AM CVn, RS CVn, CY Cyg, AM Her, 
- U Her, RZ LMi, DY Per, GK Per, ER UMa


KR Aur, S Cyg attempts (failed due to cloud) 
Bullet Astrometric Monitoring - Nearby Stars
- DX Cnc (Gliese 1111) , CN Leo (Wolf 359)
 
- Evening session (2.6 hrs), thin cloud
- Session operated under semi-automated control, with remote monitoring from indoors computer. 
- Ambient Temperature:  +2 deg C  (minimum)
- CCD operation -25 degC (at 65% average cooling).  
- main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis
- opportunity taken to acquire a couple of deep sky targets

GK Per - Variable Star, Nova (1901) : Outburst Mar 2010 

GK Per (Perseus) 
GK Per is star (NA + XP) which had a nova eruption in 1901, and undergoes occasional 
minor outbursts since then,  for example the outburst in Sept 2008.

New outburst in Mar 2010 is noted to have occurred between observations 
at 2010-03-01 01:00h UT and 2010-03-09 20:00h UT

 
Image
GK Per - 2010-03-03
Mag V +13.0 
GK Per - 2010-03-24
Mag V  +11.4
Image Image
Annotated CCD Image (cropped)
3 x 15s exposure (average combine), 3x3 binning, V Filter 
2010-03-03 00:57hUT (#415187-91)
12" LX200R  (at f/9.7) + ST-10XME
Annotated CCD Image ( cropped)
3 x 15s exposure (average combine), 3x3 binning, V Filter 
2010-03-24 23:39hUT (#418071-75)
12" LX200R  (at f/9.7) + ST-10XME

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HAT-P-13 - Extrasolar Two Planet Host Star

HAT-P-13  (Ursa Major

HAT-P-13 is a 2-planet system, with planet "b" transiting every 2.9 days and a massive planet "c" 
in a ~ 430 day orbit that is highly eccentric. The inclination of the outer planet could either be 
approximately coplanar with the inner planet or tilted ~ 45 degrees, according to current 
observational constraints and theoretical considerations. If it is coplanar then two interesting 
scientific goals are feasible: 1) the inner planet's orbital eccentricity can be measured and used 
to infer the planet's mass distribution, and 2) the outer planet might transit. Both goals are thought 
to be within reach of advanced amateur exoplanet observers. This 2.5-month 
observing opportunity repeats every 14 months, but this year's is unusually favorable and will 
not recur for several years. 
Greg Laughlin has a good description of this upcoming event posted at 
his oklo web site: http://oklo.org/tag/hat-p-13/  

More on HAT-P-13 at 

Image 

Annotated CCD Image  (50% size)
3 x 15s exposure (average combine), 3x3 binning, C filter,  
2010-03-25 00:16h UT (#418110-16)
12" LX200R  (at f/9.7) + ST-10XME
[Full size Image]

HAT-P-13  - Reference Stars Used

Image 

Annotated CCD Image  (75% size, cropped)
3 x 20s exposure (average combine), 3x3 binning, V filter,  
2010-03-25 00:17h UT (#418111-17)
12" LX200R  (at f/9.7) + ST-10XME

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81P/Wild  - Comet

Comet 81P / Wild  (passing through starfield in Virgo)

Image
CCD Image (50%)
5  x 45s exposure (average combine), 3x3 binning, C Filter 
2010-03-25 00:23 hUT (#418120-24)
12" LX200R  (at f/9.7) + ST-10XME

 

 Comet 81P / Wild - - detail

Image
CCD Image (log scale)
Image details as above

 

Image
CCD Image (log scale, cropped)
Image details as above

 

Image
False Colour CCD Image (log scale, cropped)
Image details as above

 

Earlier Image of Comet 81P / Wild - 2010-03-10

Image
CCD Image (cropped)
3  x 45s exposure (average combine), 3x3 binning, C Filter 
2010-03-10 00:30 hUT (#416382-86)
12" LX200R  (at f/9.7) + ST-10XME
[larger image]

 

 Earlier Image of Comet 81P / Wild - 2010-02-21

Image
CCD Image (cropped)
3  x 45s exposure (average combine), 3x3 binning, C Filter 
2010-02-21 01:37 hUT (#414534-36)
12" LX200R  (at f/9.7) + ST-10XME

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NGC 3423 - Spiral Galaxy & Supernovae 2009ls

NGC 3423 with SN 2009ls (Sextans)
SN 2009ls (Type II) was discovered 2009/11/23.779 by Koichi Nishiyama and Fujio Kabashima
Magnitude at discovery +xx.x
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2010-03-25.03) was taken 121 days after SN 2009ls discovery.
SN is much fainter but still visible - Estimated Magnitude +16.6 (C)

Image
Annotated CCD Image (Linear Scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter 
2010-03-25 00:45 hUT (#418152-55)
12" LX200R  (at f/9.7) + ST-10XME
 
SN 2009ls - light curve based on images shown here (C Filter)
Image
 

NGC 3423 - earlier image (2009-03-09)
Image below (2010-03-09.97) was taken 106 days after SN 2009ls discovery.
SN is much fainter but still visible - Estimated Magnitude +16.9 (C)

Image
Annotated CCD Image (Linear Scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter 
2010-03-09 23:50 hUT (#416348-52)
12" LX200R  (at f/9.7) + ST-10XME
   

NGC 3423 - earlier image  (2009-02-20)
Image below (2010-02-20.95) was taken 89 days after SN 2009ls discovery. 
SN is marked by white cross-hairs. Estimated Magnitude +15.9 (C)

 Image
Annotated CCD Image (Linear Scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter 
2010-02-20 22:50 hUT (#414350-54)
12" LX200R  (at f/9.7) + ST-10XME
  

NGC 3423 - earlier image  (2009-12-11.16)
Image below (2009-12-11.16) was taken 17.4 days after SN 2009ls discovery.
SN is marked by white cross-hairs. Estimated Magnitude +14.6 (C)

Image 
Annotated CCD Image (Linear Scale, 200% size, Cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter 
2009-12-11 03:52 hUT (#403383-87)
12" LX200R  (at f/5.7) + ST-10XME
  

NGC 3423 - earlier image (2009-11-27.18)
Image below (2009-11-27.18) was taken 3.4 days after SN 2009ls discovery.
SN is marked by white cross-hairs. Estimated Magnitude +14.3 (C)

Image 
CCD Image (Linear Scale, 200% size, Cropped)
3 x 60s exposure (average combine), 3x3 binning, C Filter 
2009-11-27 04:18 hUT (#400089-112)

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SN 2010ba - Supernovae in anonymous galaxy

SN 2010ba in anonymous galaxy (Leo)

SN 2010ba (Type Ia) was discovered 2010/03/21.33 by Catalina Real-Time Transient Survey
Magnitude at discovery +14.4
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2010-03-25.05) was taken 3.7 days after SN 2010ba discovery.
SN is much fainter but still visible - Estimated Magnitude +15.3 (C)

Image 

Annotated CCD Image  (cropped)
5 x 60s exposure (average combine), 3x3 binning, C filter,  
2010-03-25 01:05h UT (#418170-74)
12" LX200R  (at f/9.7) + ST-10XME

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NGC 4449 - Irregular Galaxy

NGC 4449 / Caldwell 21 (Canes Venatici)

Image
CCD Image (35% size)
6 x 90s exposure (average combine), 2x2 binning, C Filter
2010-03-25 01:51 hUT (#418223-28)
12" LX200R  (at f/9.7) + ST-10XME

 

NGC 4449 - detail

Image 
CCD Image (75% size, cropped )
image details as above

 

NGC 4449 - detail

 Image
Negative CCD Image (100% size, cropped )
image details as above

 

NGC 4449 - detail

Image 
CCD Image (100% size, cropped )
image details as above

 

NGC 4449 - Earlier Image (2006-12-20)

Image 
CCD Image (250% size)
5 x 180s exposure (average combine), 2x2 binning, C Filter
2006-12-20 05:51h UT (#167495-99)
8" LX200 Classic + ST-7E

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Variable Stars

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Conjunction - 2010-04-15

Conjunction of Venus, Mercury and New Moon, 2010-04-15

Image
Photo, Canon ED450D  

 

Conjunction - detail

Image 
Annotated Digital Photo (details as above)
Click on image for larger picture

 

Mercury & New Moon - detail

Image 

Digital Photo (details as above)

 

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This Web Page: CCD Images - Session 418  (2010-03-24)
Last Updated : 2015-05-16
Site Owner : David Richards
Home Page : David's Astronomy Web Site