Affordable DSO Astrophotography

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Telescopes: Short and sweet8” f/5 Newtonian (Synta, Orion, Antares, Celestron)OTA: $290-$4008” f/4 Newtonian (e.g. AstroTech 8” f/4, used GSO)OTA: $45080 mm ED Refractor (Orion, Skywatcher, WO, AstroTech, SV)OTA: $550-$70066 mm ED Refractor (WO, AstroTech)OTA: $330-360Monday, November 23, 2009
Newt Pros: Lots of photons, nofalse color, and inexpensiveNo chromatic aberrationNo purple haloNo IR-induced star bloatLight Gathering vs. Size8000600040002000By far, biggest aperture per $03” 4” 6” 8”SNR in <strong>DSO</strong> images driven heavily by aperture.Available in focal lengths well-suited to current camerasMonday, November 23, 2009
Page 1 and 2: Affordable DSOAstrophotographyCraig
Page 3: $49,000 QuestionMonday, November 23
Page 6 and 7: Tony HitchcockMeade LXD55 SN10, Baa
Page 8 and 9: Garrett GraingerOrion ED80, Canon R
Page 10 and 11: Scott AnttilaHPN 8” f/5, MPCC, Ca
Page 12 and 13: Chuck KimballExplore Sci ED80, Cano
Page 14 and 15: Stephen HamiltonMeade LXD-75 SN8, M
Page 16 and 17: RoadmapTelescope: Keep the focal le
Page 20 and 21: Newt Cons: Size and comaCons:Weigh
Page 22 and 23: Coma is driven by position & f-rati
Page 24 and 25: Baader MPCCCorner of Trifid2(~12 mm
Page 26 and 27: Short refractors cons: Samplingrate
Page 28 and 29: Think small scopes can’t go deep?
Page 30 and 31: Think small scopes can’t go deep?
Page 32 and 33: Image Sampling: 400 vs. 1000 mmGoin
Page 34 and 35: What spending more gets you:Stabili
Page 36 and 37: Rules of affordable mountsDo not ov
Page 38 and 39: Tuning / adjusting is straightforwa
Page 40 and 41: Autoguiding HardwareGuide ScopeTypi
Page 42 and 43: Autoguding SoftwarePHD Guiding (Fre
Page 44 and 45: Garrett GraingerAtlas EQG, 6 minute
Page 46 and 47: Monday, November 23, 2009“100 min
Page 48 and 49: Michael GarvinCelestron ASGT, HPN 8
Page 50 and 51: What paying more on your mountgets
Page 52 and 53: What spending more gets you:Bigger
Page 54 and 55: FOV of 11 mm chipsMonday, November
Page 56 and 57: Atik 16IC: Adjacent bias framesMond
Page 58 and 59: Canon XSi: Adjacent bias framesMond
Page 60 and 61: Urban M51: 350XT vs. 3 MonoCCDsVery
Page 62 and 63: Urban M51 Rematch: XSi, Color& Mono
Page 64 and 65: Capture & ProcessingK3CCDTools ($50
Page 66 and 67: Photoshop: Even older versions arei
Page 68 and 69:
$49,000 QuestionCelestron C8-N ASGT
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Affordable DSO Astrophotography

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