astrosathya
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Everything posted by astrosathya
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Light & Short APO refractor for Star Adventurer
astrosathya replied to GuLinux's topic in Discussions - Scopes / Whole setups
I've used a Sigma 70-300 DG Macro APO lens for Canon cameras. This lens is just about $150 and has 3 ED elements in it as part of the 13 elements. Absolutely no CA, no halos etc. I'd recommend that for a ASI1600 because of the image scale and compatibility with the SA. -
Thanks for the reply Susaron. I actually have a 150mm F/ Newtonian as well as a QHY9M with 7x36mm HaOIIISIILRGB filters. ? The newt has a faulty secondary holder and its too much effort o setup the CCD in rainy season, hence the use of my Modified DSLR. I'll try the newt next time with a LP filter. Thanks again.
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How did you manage to record so much data in 1hr? I too images the same object on 5th July this year through my RC and DSLR (135x30s, iso3200). The ISO was a mistake, should've kept it at 800, but regardless, theres a stark difference. Please can you help?
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Hi Astrobaby (Sorry, I don'y know your real name).
Recently I followed your excellent HEQ5 strip down and service guide, thank you. It solved my problem of severe backlash in RA which started after my HEQ5 took a rather nasty fall. However, I have a new problem. The RA has become stiff, so much so that balancing is a pain. The axis does not swing free. I am not able to understand what I have done wrong. My friends online told me to loosen the "collar", but again, I am too daft to understand what collar they are referring to. I'd be very thankful if you could please advice what I may do to set the axis swinging free again.
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Hi Steve, I simply love your Namaste touch.
The problem was that the RA bearing, ( which sits between the RA worm wheel and the taper bearing on the rear end of the axis) was broken internally owing to the fall. However, while reassembling the mount after the fall, two years ago, I had placed it back in its original position, all by sheer luck. But then, when I removed the same bearing for regreasing this season, I missed the original position and the dent in the bearing caused the axis to stiffen. I checked well and then purchased an SKF 6006 bearing and discarded the old one. Works well now. Haven't been able to field test it owing to Monsoon season here.
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Hi Lee,
Been a long time we've chatted. Hope you still remember me from Opticstar?
Anyway, I saw your post from 2014 about wanting to buy the DS-616 camera. Did you buy it? Whats your opinion on it? I am planning on a CCD soon and it is definetly on my list of probable cameras.
Do let me know.
Thanks,
Sathya.
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All photos of my deep sky objects, good or bad.
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From the album: Deep Sky Objects
M42, Running man and IFN, captured on 8th January 2016 from a farm about 120 kilometers from Bangalore, India. Equipment was Orion 80ED, Canon 6D unmodded, 18x300s on HEQ5-PRO guided with PHD1 Stacking was in DSS and processed in Pixinsight and finished in Photoshop. -
Altair Astro 6” Ritchey Chretien review
astrosathya replied to johnrt's topic in Member Equipment Reviews
I was surfing for reviews of the GSO 6" RC, and this happens to be right from the heart. Also the quality of the images are simply superb, but that mostly would boil down to the skills of John, who is an amazing Astrophotographer. I sold my Sky-Watcher Explorer 200, F/5 Newt yesterday and now in the market for a less bulky scope. My primary interest are small galaxies, so I as leaning towards the 6" RC. Brilliant review I must say, and I am convinced that it is the scope of my choice. Thanks once again John for the wonderful writing. -
From the album: Deep Sky Objects
First test shot of M42 using a self Modified canon 500D camera. 82x90s images stacked in Deep sky stacker and processed in Photoshop CS5. -
From the album: Deep Sky Objects
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From the album: Deep Sky Objects
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StackedOmCent iso1600 55x120s 22032014JPEGlowres
astrosathya posted a gallery image in Member's Album
From the album: Deep Sky Objects
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From the album: Deep Sky Objects
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stackedM42iso1600 1min shivanahalli 11122013 small enhancedCopy
astrosathya posted a gallery image in Member's Album
From the album: Deep Sky Objects
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From the album: Deep Sky Objects
Best image of Saturn yet. Canon 550D, SW 200PDS, Opticstar 3X APO Barlow, 3000 frames at 640x480 crop mode (50fps). EOS Utility, Autostakkert 2!, Registax, PS.© Sharma Astronomy
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From the album: Deep Sky Objects
Very first Astrophoto using a Canon 550D, Celestron C8, CG-5 GOTO from Eccles, Salford, 100 meters from the M60. :)© Sharma Astronomy
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From the album: Deep Sky Objects
M8, captured from North Bangalore, India using the Orion 80ED, HEQ5-PRO, EQMOD,Canon 550D, Nebulosity V3 and V2, Finder guider, Opticstar PL-131M. About 1.5 hours worth of data.© Sharma Astronomy
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From the album: Deep Sky Objects
First attempt at a mosaic. Individual images are below. Photos combined using Microsoft ICE.© Sharma Astronomy
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From the album: Deep Sky Objects
My best Jupiter yet! Canon 550D at 640x480 crop mode, Opticstar 3X APO Barlow, about 3000 frames stacked in Autostakkert 2! and finished using Registax and PS.© Sharma Astronomy
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From the album: Deep Sky Objects
My best shot at the moon, Orion 80ED and Canon 550D, processed in PS.© Sharma Astronomy
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From the album: Deep Sky Objects
Just a normal shot at the Full moon at apogee using my 550D and Tamaron 55-200 lens @200mm© Sharma Astronomy
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From the album: Deep Sky Objects
Taken using Canon 550D, Orion 80ED, HEQ5-PRO, Guided using the SW 9x50 finder converted to Guider using a homemade adapter and Opticstar PL-131M camera. About 90 minutes worth of data.© Sharma Astronomy
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From the album: Deep Sky Objects
Taken using Sky-Watcher Explorer-200PDS, HEQ5-PRO, Canon 550D. Guided using Orion USA 80ED and Opticstar PL-131M camera and PHD guiding software. Total of 62min exposures as 120sec x 31 subs. Taken from my rooftop at Bangalore INDIA.
