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DSLR Astrophotography

DSLR Astrophotography. Blythe Guvenen Kitt Peak Visitor Center. DSLR Astrophotography. 1-5 minute exposures N oisier than dedicated astrophotography CCDs E asier to use! E quipment Cable release M irror lockup P oor H-alpha sensitivity M odified DLSRs are available.

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DSLR Astrophotography

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  1. DSLR Astrophotography Blythe Guvenen Kitt Peak Visitor Center

  2. DSLR Astrophotography • 1-5 minute exposures • Noisier than dedicated astrophotography CCDs • Easier to use! • Equipment • Cable release • Mirror lockup • Poor H-alpha sensitivity • Modified DLSRs are available

  3. Equipment: “Inexpensive” Set Up • Wide-field shots • DSLR camera • Any DSLR with a “bulb” setting • 8mm to 300mm lens • Sturdy tripod • “Piggyback” to tracked telescope

  4. Equipment: Moderate Set Up • Modified DSLR • Hutech modified camera • Canon 60da • GEM – German Equatorial Mounts • Losmandy GM-8; Orion Atlas EQ-G • Widefield refractor, Stellarvue, TeleVue, etc. • Meade SN-8 etc.

  5. Equipment: $$$ • Mount: AP 1200GTO • Field computer, MaximDL • Observatory w/power • Takahashi Epsilon-200

  6. Mount Manufacturers • Losmandy G11 • w/ Gemini GOTO • Celestron CGE, CGEM Pro • Mountain instruments • AP 600-900-1200 • Software Bisque Paramount ME & MX • Takahashi

  7. Accurate Tracking: Autoguide • Autoguiding? • Ensures round stars • Fishcamp • Starlight Express “Lodestar” • SBIG ST-4 & STV • Discontinued • SBIG SG-4

  8. Telescope • Wide-field • Short focal length • Refractor or Newtonian • Astrograph

  9. Refractor Examples • TeleVue: 102is • Stellarvue • Astro-Physics-$$$ • TEC-140 • APM • Takahashi FSQ-106 • Meade

  10. Reflector • Schmidt-Cassegrain: • Long focal length, slow optical system, moving mirror – difficult to stabilize focus • Compact optical tube assemblies • Newtonian • Fixed mirrors, fast optical system, short exposures • Longer optical tube assemblies • RC • Flatter near the edge of the field of view • No corrector plate

  11. Focuser • Precision…but expensive: Feathertouch, Moonlight, Optec TCF-S, FLI, and “FocusMax” • Less expensive: • Hartmann mask • Stiletto focuser, knife edge

  12. DSLR Examples:

  13. Questions?

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