DSO Research

DSO Research performs casual observation of deep space objects (DSOs) beyond our solar system. These observations are cataloged and archived for future comparison and analysis. This site provides reference information on the equipment and processing used to produce these observations.



Contact:   contact.steve.usa AT gmail DOT com     (or steven_usa on the CloudyNights forum)

Mount Celestron AVX (TPI spreader) Celestrong CGEM-DX
Scope ES80 + ES field flattener VC200L + .71X reducer (f/6.4)
Focuser stock Starlight Instruments 2515HD

MicroTouch Focusing System
Guider Orion SSAG Starlight Express Lodestar X2  (mono)
Guider Scope Astromania High Deluxe OAG Orion ST80 / Mini 50MM
Camera Canon EOS T3i/600D (cooled) ZWO ASI1600MC-C  (OSC)
Filter IDAS LPS-D1 (Clip-In) IDAS LPS-D1 48mm
Field Radius (with T3i/600D)
with ES FF: 1.555 deg / 93.3 arcmin
(7.161 as/px)
(with T3i/600D on VC200L)
with .71X reducer:  0.591 deg / 35.46 arcmin  (2.723 as/px)
without reducer: 0.428 deg / 25.68 arcmin  (1.973 as/px)
with TV2X PM:  0.203 deg / 12.18 arcmin  (0.937 as/px)
(with 450D on VMC200L)
with .62X reducer:  0.637deg (3.578 as/px)
withouth reducer: .0.393 deg (2.196 as/px)

2017/03/08: Vesta motion captured in a sequence of exposures  ( )

2016/07/02: PGC 55308 confirmed (15.3-15.9 magnitude, estimated 4.5 million light years away)

2016/07/01: Mansic twinkling:

2016/04/23: Alya itself is a double star, but nearby there is yet another double!

2015/06/26: Saturn

WINTER 2015:  One of the most incredible amateur CCD astrophotography images ever (152 hours of integration, across 55 nights, collected January - July 2015 in New Zealand):

2014/10/02: Comparing galaxy distances

Touring Comanche Springs 15-inch refractor.

Learning initial alignment of guide scope and main scope
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