Object Info | |
Objects | NGC6559 (The brightest component), IC4685 The large diffuse nebula north of 6559, B303 (The dark S-Shaped lane). |
Type | Emission Nebula, Reflection Nebula, Bok Nebula |
Centered at: | RA:18 09.6 Dec: -23 58 |
Constellation | Sagittarius |
Magnitude | ? Dim |
Size | ? |
Distance | ? |
Age | ? |
Dimensions | Ngc6559 - 8 x 5 arcminutes, IC4685 - 10 x 8 arcminutes |
Image Field | 27'45" x 18'46" |
Notes |
|
Taken from: |
Tin Shed Observatory
Gold Coast, Queensland Long - Lat = 153:23.54E - 27:56.8S |
On: | 20th-April-2003, 3rd-May-2003 |
Image Info | |
Telescope | Celestron C11 @ f6.6 |
Focal Length | 1840 millimetres |
Telescope guiding |
Ha was guided with ST5c on 102mm Synta f5 + Meade 2x Barlow (1000mm) RGB images were self-guided with AO7. |
Telescope control | Astrometric Sky Walker II |
CCD camera | SBIG ST-10xe |
Camera cooling | Regulated Thermoelectric |
Camera pixels | 2184 x 1472 x 6.8um |
Image scale | 0.76 arcseconds per pixel |
Processed with: | Mira A/P, Maxim DL, AIP4Win, CCDSharp, Photoshop |
Hydrogen Alpha Exposures | Ha = 75 minutes taken as 5-minute unbinned subimages. |
Image Calibrations | All sub-images Dark Subtracted, Flat Fielded. |