David's Astronomy - Images 2007-09-10 (S00211)

Objects Session Notes

NGC 7461 - Spiral Galaxy with Supernova 2007hj

M1 - Supernovae Remnant

NGC 1555 (Hind's Variable Nebula)

Polar Alignment

Astrometric & Photometric Monitoring
- SS Cyg (Dwarf Nova)
- BL Lac (Blazar)
- U And, W And, U Her (Mira variables)
- Z And, SZ Her (Variable)

- Session duration 3.6 hr, interrupted by cloud during first hour, becoming very clear later.

- CCD operation of -20 degC (at 77% average cooling). .

- main objectives were to acquire images of selected variable stars for ongoing photometry, to check out new software routines and refine polar alignment.

- opportunity was taken to acquire follow up images of Supernova 2007hj in NGC 7461 and images of M1 and Hind's Variable Nebula (T Taurii)

- More Notes (Polar Alignment)

-

NGC 7461 - Spiral Galaxy with Supernova 2007hj

NGC 7461 (Pegasus) with SN 2007hj
2007hj is a Type 1a Supernova discovered 2007/09/01.32
by Lick Observatory Supernova Search (LOSS) at mag +15.9
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2007-09-11.02) was taken 9.7 days after discovery.

CCD Image
3 x 120s exposure (average combine),
2x2 binning, C Filter, Linear brightness scaling
2007-09-11 00:26 hUT (#211093-94)

M1 - Supernovae Remnant

M1 (Taurus)

CCD Image
6 x 180s exposure (average combine),
2x2 binning, C Filter, Linear brightness scaling
2007-09-11 01:05 hUT (#211121-26)

M1 - detail

CCD Image (200% size)
Image details as above

False Colour CCD Image (200% size)
Square Root brightness scaling, False Colour (Inverse Spectrum)
Image details as above

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