| Designation |
IC
1318b - Northern Region "The Butterfly Nebula - Bright Star is
Sadr or Gamma Cygnii
|
| Type | Emission Nebula |
| Constellation | Cygnus |
| Coordinates (centered) | RA '20 27 07' Dec '+40 07 55' |
| Magnitude | |
| Size | |
| Distance | 4,000 light years from Earth |
| Dimensions | 50' x 30' |
| Image Field | 90.6 x 131.3 arcminutes |
|
Notes:
|
The large dark nebula that separates the two halves of the Butterfly Nebula is LDN 889, and B 343 is the small dense dark cone shaped nebula in the middle of the emission clouds on the right side of the image. |
|
|
| Telescope | Takahashi FS60C f/5.9 on Losmandy G-11 with Gemini L3 |
| Focal Length | 264 mm @ f/4.4 with Takahashi focal reducer |
| Guiding | Starlight Xpress SXV guidehead through 10" SCT @ f/3.3 |
| 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 | 5.23 arcsec/pixel |
| Filters |
1.25" Astronomik Type II Dichroic
IR blocking filters in Astronomik filter drawer - Clear, Red, Green,
Blue, Ha
|
| Exposures | Total exposure time: 210 minutes -Ha 24 x 5 (120) Luminance 30 (6x5) minutes unbinned.RGB - 4 x 5 (20) each binned 2x2 |
| Calibration | None |
| Processing Software | Maxim DL, Photoshop CS (8.0) |
| Location | Chiefland Astronomy Village, FL - 29.393 N , - 82.863 W |
| Date/Time | 06/20/04 '04:34' - '07:53' UT' |
