| Designation |
NGC 7640
|
| Type | Nearly Face on spiral galaxy - Type SB(s)c II |
| Constellation | Andromeda |
| Coordinates | Telescope centered at RA '23 21 46' - Dec ' + 40 50 40' |
| Magnitude | 11.3 |
| Size | If the distance estimate is correct it's true diameter is 60,000 light years |
| Distance | 19 million light years (seems to be some discrepancies) |
| Dimensions | 10 x 2.2 arcminutes |
| Image Field | 15 x 19 arcminutes |
|
Notes:
|
There is not a lot of information about this faint, but interesting spiral. |
|
|
| Telescopes | Meade 10" LX200 f/10 on Losmandy G-11 with Gemini L3 |
| Focal Length | 1575 mm @ f/6.3 |
| Guiding | SXV guidehead through Takahashi FS60C @ f/5.9 |
| Telescope Control | Maxim DL (V3) |
| CCD Camera |
Starlight
Xpress SXV-H9 - USB 2 ExView progressive scan
1392 x 1040 (6.45 uM)
pixel array (8.98 x 6.71 active area)
|
| Image Scale | .88 arcsec/pixel |
| Filters |
1.25"
Astronomik Type II Dichroic IR blocking filters in Astronomik filter
drawer - Clear, Red, Green, Blue
|
| Exposures |
Total exposure time - 134
minutes: Luminance 70 minutes (14 x 5) binned 2x, Blue 24
minutes (6 X 4) R&G 20 minutes each (5 x 4) binned 2x.
Sigma combined in Maxim
|
| Calibration | None |
| Processing Software | Maxim DL, Photoshop CS (8.0) |
| Location | Chiefland Astronomy Village, FL - 29.393 N , - 82.863 W |
| Date/Time | 11/09/04 / '00:03' - '02:28' UT |
