New Member with a request

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  • Member since
    January, 2014
New Member with a request
Posted by Jose Auger on Thursday, January 02, 2014 5:57 PM

Hello all members. I am from Puerto Rico (USA). Although I am not new to astronomy or telescopes, it has been quite some time that I have not owned one. I took two courses in astronomy during my college years as I was majoring in Mathematics and Physics. Later, for masters and PhD I moved to economics, because of the mathematics involved. At present I am a full Professor at the State University Teching economics and statistics at graduate level.

My first introduction to astronomy and telescopes came through my father, who owned one. I was a small child but eager to learn about the matter. The sky always held a Wonderful mystery fir me. My father was a close friend with a university professor who taught The astronomy courses an the State University (the same one where I'm teaching now). Through that association I kearned to use a telescooe and eventually build my own newtonian reflector. They were wonderful years of learning and experimentation. Now I'm back and I am buying a new setup.

The telescops I have chosen and placed an order for are the Skywatcher Esprit 120 mm Triplet APO and an Esprit 80 mm Triplet APO. I shall be using a Canon 6D modified, and a Celestron CGE Pro as the mount. For guiding I am planning to use a Skywatcher Equinox 80 or the 66. i have not decided on a guide camera or if it would be better to buy one of the new guiding systems from SBIG and others. If anybody here has an experience with one or more of these systems, I shall appreciate their input.

  • Member since
    March, 2008
Posted by Antitax on Thursday, January 02, 2014 7:08 PM

   Hi. I have an 80mm f/6 triplet that gave very flat images on an Atik sensor (don't remember the size but it's average) with no corrector, when we shot a lot of pictures last summer and autumn. Stars in the corners had no appreciable distortions, plus vigneting was no issue. The 80mm Esprit should be flat enough sans corrector, but I suspect your Canon sensor is very large and requires one if you're the demanding type.

   The scope is mine but the Losmandy mount belongs to the club and the remainder belongs to another club attendant, so I don't know them well enough to comment.

   I have no experience with the rest of your equipment but your guidescope choice is needlessly expensive. Equinox is Sky-Watcher's top-of-the-line apo doublets, and an achromat is plenty good enough. For guiding we use a 50mm f/3.6 finder which proved accurate enough up to 800mm focal length (my C5 with f/6.3 reducer/corrector). We fashioned a small red filter for the guiding camera so only the light least disturbed by turbulence reaches it; this does give tighter spot sizes per the computer readings, and better guiding.

TS 8x40 Wildlife, 10x50 Marine/Fujinon 16x70/TS 80mm triplet, 6x30 finder, EQ-3 mount, TS 2" 99% diagonal/Celestron C5+ and 6x30 finder, DIY tripod/5" Bahtinov/12" GSO dob, 8x50 finder/Meade 2" 24mm 82°/Hyperion 24,13,10mm 68°/TS Expanse 17mm 70°/SW 7mm Panorama 82°/Ultima 2x barlow/Astronomik UHC-E filter/Baader O-III/Astro Solar 5" & 80mm filters/Sky Atlas 2000/Rükl's Moon Atlas/Canon 400D/5mW green laser

  • Member since
    January, 2014
Posted by Jose Auger on Thursday, January 02, 2014 7:53 PM

Thanks for the information. I still wonder if any of the new systems where a guidescooe is not necessary could be of use. SBIG has one which is really a very small guidescooe with a guiding camera integrated. I wonder if such a system would be superior to a traditional guidescope with guiding camera.

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