Wide Field Messier M13
Photo Information
- Narrow field M13 image
- Messier M13 globular cluster in center
- Image taken at the Rose City Astronomer
star party
at Hancock Field Station, OR
- Image scale: 13° x 8.5°, North is top, West is right
- Image size: one fourth D70 resolution
- Faintest stars: about 11 magnitude
- Seeing: Antoniadi scale 3, moderate seeing, with larger air termors
- Three images stacked DSC_0829.JPG - DSC_0831.JPG
- DSC_0829.JPG image information
- Nikon D70
- 2004/05/22 03:42:31.9
- RAW (12-bit) Lossless
- Image Size: Large (3008 x 2000)
- Lens: Nikkor 105mm 1:1.8 AIS
- Focal Length: 105mm
- Exposure Mode: Manual
- Metering Mode: Center-Weighted
- 30 sec - F/2.8
- Exposure Comp.: 0 EV
- Sensitivity: ISO 1600
- Optimize Image: Normal
- White Balance: Auto
- AF Mode: Manual
- Flash Sync Mode: Not Attached
- Color Mode: Mode Ia (sRGB)
- Tone Comp: Auto
- Hue Adjustment: 0°
- Saturation: Normal
- Sharpening: Auto
- Image Comment:
- Noise Reduction: Fixed Pattern
Imaging Equipment
- Camera: Nikon D70
with Nikkor 105mm 1:1.8 AIS lens
- Finder: Orion Argonaut™ 150mm Maksutov-Cassegrain telescope,
f/12 focal ratio, 1800mm focal length
- Telescope Mount: Losmandy G-11
Imaging Processing
- Nikon Capture 4.1: RAW, DDE at 10 and save as 16 bit TIF
- Cor Berrevoets Registax Version 2.1.14.0 beta: Three images stacked and wavelet process at 2.4, 1.7, 0... save as 16 bit TIF
- Adobe Photoshop Version CS: levels, unsharp mask, resize, unsharp mask, resize, unsharp mask, levels and save as JPG.
© 1998-2004 David Haworth
