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lawrie
Carpal Tunnel
Reged: 01/31/06
Posts: 1744
Loc: Okanagan Valley
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Here's my NGC 891,
36x360s lights, 29x360s dirks
Registered in DSS
Levels and curves, horizontal banding
np101-40D
Any comments and processing advise please
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Clear Skies
Lawrie
Ultima 8
Atlas EQ-G
ZenithStar 80 FD
DSI Pro - Pro II
Canon 350D
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Nils_Lars
Post Laureate
Reged: 01/04/08
Posts: 3459
Loc: Santa Cruz Mountains , CA
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Love the detail in the dust lane and the colors show well in the galaxy and the stars , couple of other fuzzies in there even 
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Erik
Orion Atlas Self Hypertuned (EQMOD)
Orion ED 80
Williams Optics VII reducer
Celestron 8" SCT
Orion Starshoot Autoguider
PHD guide
Canon 400D Hap Griffin Mod w/Baader filter
Astronomik clip-in LP filter and 12nm Ha
Stilleto CVF and Bahtinov mask
Tamron 75-300mm&28-80mm lenses
NexImage webcam
http://www.flickr.com/photos/31986095@N05/
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Agnotio
sage
Reged: 08/29/08
Posts: 232
Loc: Ottawa, Canada
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This image has very nice depth, and the color is good too. The only thing I would say by way of constructive criticism is that some of the larger stars look irregular, which may indicate a problem with your guiding for the 6 min subs. Maybe take down the subs to a shorter time or try to determine what is causing the guiding error?
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Sky-Watcher Equinox 80ED
EQ6 Pro with EQMOD
Canon 450D
Sky-Watcher 10" f/4.7 Dob
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lawrie
Carpal Tunnel
Reged: 01/31/06
Posts: 1744
Loc: Okanagan Valley
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Your right, I hadn't noticed that.
It seems to be going two ways which leads me to think it was the seeing, but I don't really know.
I just hypertuned the mount, and am waiting for a clear night to run pempro and see what the PEC and backlash are like, hopfully as good as Eric's and David's.
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Clear Skies
Lawrie
Ultima 8
Atlas EQ-G
ZenithStar 80 FD
DSI Pro - Pro II
Canon 350D
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Rankinstudio
sage
Reged: 04/05/08
Posts: 425
Loc: Salt Lake City, UT, Lake Powel...
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The atlas can be a pain to fine tune. I dont know how many times I have disassembled mine tweaking things out. I have noticed one thing tho. I use PHD to guide, and if you set the calibration ms up to high you will get more errors. I have found I get the best results with my scope (1200mm FL) when I calibrate with 520 - 560 ms steps. Getting the gear meshes tight is important as well (not to tight). I have noticed big improvements by tightening up the motor gear to the idle gear, and the worm to the main gears. I have totally regreased my mount with Super Lube, cleaned it up, and replaced the worm gear bearings with 7 ball ceramic bearings. I plan to replace those with 9 ball ceramic bearings. The altas is a nice mount. I am getting very decent tracking up to 5 minutes with close to 40lbs just in the OTA assembly. (In PHD I also set the min motion really low as well. I think the default is .15, I usually go with .02 or .03)
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David Rankin
http://www.rankinstudio.com
Astro Gallery
Orion 254mm F4.7 (imaging scope)
Baader MPCC
Quickcam pro 9000 (guider, imager)
Canon Rebel XSi (self modified)
Atlas EQ-G (EQ MOD)
Canon 50mm F1.8 II Lens
Canon 28-200 F3.2 Lens
DSLR peltier cooler
Edited by Rankinstudio (10/18/09 01:56 AM)
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lawrie
Carpal Tunnel
Reged: 01/31/06
Posts: 1744
Loc: Okanagan Valley
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Quote:
I use PHD to guide, and if you set the calibration ms up to high you will get more errors. I have found I get the best results with my scope (1200mm FL) when I calibrate with 520 - 560 ms steps.
I use a 590mm scope to guide with so mine is a little larger, I was using a new beta version,I may go back to a released version.
Quote:
Getting the gear meshes tight is important as well (not to tight).
It sure sounds terrible when it stalls.
Quote:
I have noticed big improvements by tightening up the motor gear to the idle gear,
What is the idle gear?
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Clear Skies
Lawrie
Ultima 8
Atlas EQ-G
ZenithStar 80 FD
DSI Pro - Pro II
Canon 350D
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waassaabee
Carpal Tunnel
Reged: 11/26/07
Posts: 2710
Loc: Central California Coast
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Image looks great! I've never worked this target, but it just seems a tad red..
Quote:
Quote:
I use PHD to guide, and if you set the calibration ms up to high you will get more errors. I have found I get the best results with my scope (1200mm FL) when I calibrate with 520 - 560 ms steps.
I use a 590mm scope to guide with so mine is a little larger, I was using a new beta version,I may go back to a released version.
Maybe increase the RA aggressiveness?
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Gary
34N 120W
-My kingdom for blue squares!-
WO Megrez 90FD/TV 0.8x FR/FF
AT8RC
mini Borg 50/Q-Guide/PHD
CGEM
Canon 350D Hap Griffin Baader mod - o.o
My Friend Flickr
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lawrie
Carpal Tunnel
Reged: 01/31/06
Posts: 1744
Loc: Okanagan Valley
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Good idea Gary.
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Clear Skies
Lawrie
Ultima 8
Atlas EQ-G
ZenithStar 80 FD
DSI Pro - Pro II
Canon 350D
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