SaratogaSkies Jim Solomon's Astropics

Search

Latest news

December: Test shots with new scopes/mounts

Dec 21: TMB 80/480 Arrives!

Dec 3: AP1200 Arrives!

Nov 30: TMB 152/1200 Arrives!

Links:

NGC 6384 (Spiral Galaxy)

Image Details:

Camera: Canon Digital Rebel (300D)
Mount: Celestron AS-GT
Scope: Celestron C8-N (8" f/5 Newtonian)
Configuration: Prime Focus
Additional Optics: n/a (Prime)
Filter: None
Effective Focal Length: 1000mm
Effective Focal Ratio: f/5
Exposure: 15 x 4min @ ISO 400
Total Exposure: 1hrs, 0min
Date: 8/11/2004, ~12:30am PDT
Location: Saratoga, CA, USA
Acquisition: DSLRfocus
Focus: DSLRFocus
Dithering: None
Guiding: Manual through Orion ST80 w/ Celestron 2x "Kit" Barlow

Processing:

  • IRIS: Dark subtraction, flat field, registration, Kappa-Sigma stacking
  • Photoshop: Noise reduction, cropping, JPG conversion

Image Description:

NGC 6384 is a small, faint spiral galaxy in the constellation of Ophiuchus. This image could have used a lot more exposure time and also should have been shot at a higher ISO setting, since this image shows signs of quantization noise. You live, you learn. North is up.