Paul Maxson Celestron C14, Mewlon 250, Orion EON120, Flea3, ASI120MM. Those who say it can't be done need to stay out of the way of those doing it. http://www.sunspot51.com
David Rankin Astro Gallery Orion 203mm F3.9, TPO 304mm F4, SkyWatcher F4 Coma Corrector, QC PRO 9000, ASI120MM, TV5XPM, Atlas EQ-G (EQ MOD), Canon EF 200mm F2.8, Canon 6D, 14mm F2.8, Atik 314L+, DSLR peltier cooler DSLR Processing Tutorial Planetary Processing Tutorial
"Normal" people worry me! - If you want to think "outside the square" you really need to get out of your box! A kleptomaniacal plethora of gear: Custom-cooled (my designs) C11&14, Orion Optics (UK) VX16 16" F4 newt waiting for obs, ED127 triplet, NEQ6Pro, HEQ5Pro, ancient AstroOptics EQ mount super-customised with microsteppers, goto etc, ASI120MM, ASI120MC, Flea3 (retired - accepting offers!) Toucam 840k, modded Canon 50d + F4L etc,etc & lots of other homebrew equipment.....
Chris TS 65mm EDQ Orion 80ST NEQ6 GoTo Mount ASI120MC Orion StarShoot Autoguider Atik 428EX Canon 550Da (modded)
Jeff -----TEC 140, Stellarvue SVR90T, SV115T20 and AT65EDQ refractors,Webster D14, C11 EdgeHD Lunt LS60THa solar scope double stacked with LS60FHaTelevue Pan 41; Ethos 21, 17; Nagler 31T5, 9T6, 7T6, 5T6, 3.5T6; Delos 10, 12, ES25, 14, 9Astro-Physics 900GTO with Rob Miller Tri36M TripodDM-4 Mount-Extension-Tripod w/ Sky CommanderDM-6 Mount-Losmandy Adapter/Extension-Berlebach Planet w/ Argo Navis
Equipment: SCT C14 - for sale * TSAPO65Q * ASI120MM * Atik 314L+ * and more
WWW: My Astro website
Quote:My ASI camera sensor was covered in dust and spots when I received it, doesn't look like it had been handled in any sort of clean room. But after a few passes of cleaning I got rid of the most noticeable dust (a few faint ones are still there, I can see them on the flat-field if I stretch it up).The smaller pixel size should reduce the visiblility of the dust motes, simply because you will be using a lower focal ratio, and so the depth of field is smaller. The dust will still be there, but more out of focus compared with large focal ratios used on cameras with bigger pixels.eg on my flea3 I use f/24-ish, and on the ASI I use f/16-ish. Depth of field is quite a bit less at f/16 and so dust on the sensor is more out of focus at the image plane.cheers, Bird