| Designation |
Simeis
147 or Sh2-240
|
| Type | Supernova Remnant |
| Constellation | Taurus "The Bull" |
| Coordinates | Telescope centered at RA '05 39 36' Dec '+ 27 48 33' |
| Magnitude | extremely faint photographic object |
| Size | Subtends over 3 degrees |
| Distance | 3,000 light years |
| Dimensions | Approx 150 light years across |
| Image Field | 197 x 197 arcminutes |
|
Notes:
|
This Supernova remnant is a very large and faint nebulae resulting from a violent star explosion (Supernova) about 100,000 years ago.The violent thermonuclear blast expelled gas, which continues to expand and be illuminated and shaped by the shockwave. The gas is primarily excited hydrogen. |
| The explosion also left a remnant in the form of the collapsed star, which is a very dense rapidly spinning neutron star known as a pulsar (J0538+2817), similar to the one that powers the Crab Nebula, also in the constellation Taurus. | |
|
|
. |
| Telescopes | Takahashi FS60C f/5.9 on Losmandy G-11 with Gemini L4 |
| Focal Length | 264 mm @ f/4.4 with Takahashi focal reducer |
| Guiding | SXV guidehead through 8" Intes Mak Cass @ f/6 |
| Telescope Control | Maxim DL (V4.5) |
| CCD Camera |
Starlight
Xpress SXV-H16 - USB 2 ExView progressive scan
2048 x 2048
(7.4 uM) pixel array (15.15 x 15.15 active area) -
|
| Image Scale | 5.77 arcsec/pixel |
| Filters |
1.25" Astronomik Type II Dichroic IR blocking
filters in True Tech filter wheel: Ha
|
| Exposures |
240 minutes total
exposure: 15 minute subs unbinned
Sigma combined in Maxim
|
| Calibration | None |
| Processing Software | Maxim DL v4.5, Photoshop CS 2, NEAT Image |
| Location | Chiefland Astronomy Village, FL - 29.393 N , - 82.863 W |
| Date/Time | 11/18/06 |
