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From: Sgl - How To Use The Blogs

Posted by ant in SGL - how to do stuff., 07 June 2012 · 1,502 views

Hi All,

It'll take a little time to write all of these things up, but here is the first.

A guide to making an entry on your BLOG. Wasn't quite what I hoped adding content mid post, but I guess I still need to get...


Pure OpenCL version of the pipeline in progress :D

Posted by NickK in Nick's blog, including AOSX (Astronomy on OSX), 26 November 2014 · 52 views

So, after much pfaffing - my C++/OpenCL pipeline implementation is just starting to come alive! :D

Previously it was using Apple GCD, however it quickly became clear that GCD's ability to sort out it's concurrency (it has it's own cl_command_queue) isn't strong part.. but I'm happy that it's starting to execute kernels and it shouldn't be too long before...


big dilemma

Posted by crashtestdummy in crashtestdummy's Blog, 25 November 2014 · 109 views

Well I have now done about 15 hours polishing with nearly 10 hours through centre and I still have the same problems as before when the ronchi image flips through.when looking at the ronchi I don't get the same obvious centre circle as before but still showing the centre astigmatism.I'm pretty much doomed to going back to the tile tool and doing a few hou...


Another damp cloudy evening

Posted by Alienfox in Alienfox's Blog, 23 November 2014 · 99 views

So I have had my scope for a month now and have had only about 2 hours with it in the dark pointing upward.

And again this evening another damp rotten evening, so it looks like it's back to the books for another read on Astronomy for the newbie, me, I have purchased 6 in last 4 weeks and have read about 3, so still a few more pages to plough through, it...


ImPP (Image Post-Processor)

Posted by GreatAttractor in GreatAttractor's Software, 23 November 2014 · 205 views
lucy-richardson, sharpening and 2 more...

Image Post-Processor performs Lucy-Richardson deconvolution, histogram stretch, gamma correction and unsharp masking. Both a command-line tool and a graphical user interface (GUI) wrapper for processing of multiple files are available.

Discussion thread: http://solarchat.natca.net/viewtopic.php?f=4&t=13927

Building from source code (C++) requires B...


Home from a great holiday!

Posted by toftm in toftm, 16 November 2014 · 163 views

Home from a great holiday in the USA, finally got to tick Kennedy off my list!

Here's a little video :-)


Friends, Romans, countrymen, lend me your wallets

Posted by Andy69 in Andy's Column, 12 November 2014 · 321 views

This article considers the financial perils of astro-photography, because while a hobby like Astronomy can at times leave you financially challenged, nothing is quite so fiscally ruinous as deciding it would be a jolly good idea to fasten a camera to your telescope.

There are many reasons you might consider taking up astrophotography. Perhaps, as your e...


First binos have arrived!

Posted by Faye92 in Faye's blog, 25 October 2014 · 437 views

First binos have arrived! Excited to try them out, fingers crossed for a clear night :)!


observing night 21st/22 october 2014

Posted by mickmurphy in mickmurphy's Blog, 23 October 2014 · 369 views

Here is a list of a few thing i saw on the night/morning of October 21/22

M1 The Crab Nebula in the Constellation of Taurus
M45 also in the Constellation of Taurus
M36-37-38 in the Constellation of Auriga
M42 In the Constellation of Orion

And about 15 Orionids in a short period of time before the clouds rolled over and put an early end to my obseving fo...


SW 200 Dobson - Eyepieces - My mods

Posted by daiwelly in daiwelly's Blog, 10 October 2014 · 607 views

After changing my mind in July and going for the SW200 dob, I love it I have come up with a list of 2" eyepieces these include:
32mm panaview which will give me 38X mag, Purchased
SW SWA 22mm which will give me 55X mag on wish list
SW SWA 8mm which will give me 150X mag on wish list
SW SWA 3.5mm which will give me 343X mag on wish list. Well within the 40...


We're off and running..... well, walking.... well, maybe just milling around a bit.

Posted by Andrew W in Andrew W's Blog, 05 October 2014 · 347 views

So it's happened!

I've got a scope.

My initial intentions of getting a small refractor were well and truly side-swiped by RobH on here doing me a corking deal on his ST120.
Having thrown in some extras including the dovetail and scope rings, a basic electronic focuser, an old EQ3 mount and a couple of eye pieces within the price I came away a very happy...


I've gone a bit technical

Posted by Hawksmoor in Blog 19648, 05 October 2014 · 373 views

Well normally I'm a bit of a " give it a go" or "I wonder what happens if I push this button" sort of bloke. Anyway for whatever reason I purchased a couple of ledger type books from Poundland and started two observational logs. One log for visual observations and one for the LVST (the Lowestoft Very Small radio Telescope). So last night, I used the mo...


The Effects of Air Velocity on Sound Waves

Posted by Geryllax Vu in Geryllax Vu's Blog, 04 October 2014 · 308 views

In the 1632 book entitled Dialogue Concerning the Two Chief World Systems by Galileo Galilei (translated by Stillman Drake), he presented his historically important ship thought experiment:

“Shut yourself up with some friend in the main cabin below decks on some large ship and have with you there some flies, butterflies, and other small flying animals....



Posted by andyin2014 in andyin2014's Blog, 30 September 2014 · 370 views

I will be traveling by car and want to transport my telescope. I have a refractor and I understand this type is the safest to transport, any advice?


Urser major

Posted by Jobie in Jobie's Blog, 26 September 2014 · 332 views

The sky is clear tonight, looking with the naked eye I caught sight of a star and there were other twinkling stars round it and also a line, having looked on the sky at night website I realised that it might be Urser majors galaxy. Has anybody else seen this?



Posted by American flyer in American flyer's Blog, 26 September 2014 · 264 views

Hi All
I bought a Nexstar6 se as I have always fancied looking at the planets and stars anyway I am all set up but it's been quite cloudy.
I have tried to focus on other things buildings etc but nothing comes into focus I know there is quite a bit turning the knob but nothing seems to happen.
When I turn the knob is the inner mirror supposed to move becau...


Here is a picture of ganymede seen through a 10" scope

Posted by Astrodob in Jupiters moons, 12 September 2014 · 964 views

Here is a picture of Ganymede seen through a 10" scope (NOTE THE PICTURE IS NOT MINE).
So here is some evidence that It might be possible...
I hope I really will see detail on Ganymede and the other moons.
Alas Jupiter is not in the sky so i will have to wait :)


Lodestar beginnings..

Posted by kerrylewis in kerrylewis' Blog, 11 September 2014 · 316 views

Finally began to see something after some helpful advice from a couple of forum members. My error was not setting the white levels etc in relation to the histogram. It's all new to me - except in terms of ordinary photography, so I was in the dark - literally. I now have 'live' images which are essential for alignment and focussing. Conditions were not g...


From: Cassiopeia Double night

Posted by MattJenko in Confusion, 07 September 2014 · 293 views

Source: Cassiopeia Double night


Blacken the Cursed Sun

Posted by rolpol in Explosions in the Sky, 30 August 2014 · 364 views

Blacken the Cursed Sun The story doesn't really start here, but I expect this is gong to be a common theme. It's cloudy.

It's cloudy because today I decided to get rid of the red dot finder that came with my baby telescope. It's cloudy because I stuck my Telrad finder on in its place, spent a good 15 minutes making sure it was calibrated properly, and spent a further 20 minute...



Posted by cutepetgroomer in cutepetgroomer's Blog, 22 August 2014 · 288 views

I am hoping that soon enough I can have my new 1.25 eyepieces. I love the format I have as well. I just want to be able to use filters as well. I know most of the time I am in light polluted skies and the use of a filter is beneficial even if by a small fraction. I still have yet to discover which telescope for me four millimeter, but that's okay. Right n...

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