1 / 11

Wide Field Imaging

Wide Field Imaging. Not really a novice RV lifestyle forced change in 2009 Light weight and portable equipment Ideal for wide field imaging with camera lenses Technique provides a good place to start imaging Slides are on www.geoandpat.com. First, Why Do I Image?.

elewa
Download Presentation

Wide Field Imaging

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Wide Field Imaging • Not really a novice • RV lifestyle forced change in 2009 • Light weight and portable equipment • Ideal for wide field imaging with camera lenses • Technique provides a good place to start imaging • Slides are on www.geoandpat.com

  2. First, Why Do I Image? • Images provide more detail than visual • Allows for more thorough study • Color!

  3. Transition from Visual to Imaging • Often start with visual equipment (I did) • SCT f/10 (long focal length) • Difficult place to start • Very small image scale (~0.5 arcsec/pixel) • Very narrow field of view • Focus always an issue with an SCT • Long focal length requires long exposures • May require guiding for good results

  4. Image Scale, a Key Concept Image scale = (207 x pixel size)/focal length Good place to start Wide field minimum Difficult From New Astronomy Press CCD Calculator (Ron Wodaski)

  5. Advantages of Wide Field Imaging • No telescope, use camera lenses • Low cost mount with RA tracking • Image scale is very large (5-50) • Polar alignment still important • Tracking less critical, no guiding • Very wide field of view • Very portable AstroTrac

  6. 200mm Lens Image

  7. 85 mm Lens Image

  8. 18mm Lens Image Many more images at www.geoandpat.com

  9. My Imaging Equipment • Canon XSi • Relatively inexpensive • Large sensor (12 MP) • Can use for terrestrial photography • Good color • Can be modified • AstroTrac mount and pier • Light weight (19 lbs) • Quick and easy to setup (15-30 min) • .

  10. My Imaging Process • Laptop computer • Camera control (Images Plus) • Camera focus (Images Plus) • Camera aiming • Red dot sight • Green laser • Exposures usually 3min x 15-20 RAW; 5 darks; usually no flats or bias frames

  11. Image Processing Software • Images Plus…. Simple, but complete • Registar…. Nothing better • Photoshop plugins • Gradient Xterminator • Prodigital Astronomy Tools • Picture Code Noise Ninja Gradient Xterminator

More Related