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laser_jock99

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Posts posted by laser_jock99


  1. Modern CCD cameras are very sensitive to incoming individual photons, couple that with a large aperture scope and it's remarkable what faint magnitudes can be reached.

    I attempted to image the same 'blank' area of sky used for the famous Hubble Deep Field Image. Using a 12" F4 fast Newtonian and Lodestar X2 camera, I was able to pick up the four main magnitude 21-22 galaxies in just 180 seconds.

    36141877845_8ae0b1360f_b.jpg

    • Like 2

  2. On 22/12/2019 at 01:22, gorann said:

    A week ago I arrived at Lizard Island (14°27 S, 145° 27´E) for research on their marine biological station until early January. It must be one of the darkest places on earth. Lizard Island is situated on the Great Barrier Reef about 20 km off the Australian coast and this far north in Queensland there are very few human inhabitants on the mainland and no light can be seen there from here. Closest town is Cairns 200 km to the south.

     

    Great post- I'm enjoying the pictures so far!

    I'm curious if you can see any light pollution from the Cape Flattery Silica Mine ? It's about 20km due south of Lizard Island. 

     


  3. Flexure can be problem on any scope- more so on Newtonians with thin metal tubes and heavy cameras hanging off at right angles.

    I'm a great believer in beefing-up the dovetail and tube rings to support the scope properly.

    Even my little 6" Newtonian benefits from a custom made, longer, stronger dovetail bar. No flexure here!

    39366870531_2f6f7f8682_b.jpg

    • Like 2

  4. 12 hours ago, old_eyes said:

    Two days of solid downpour gave me a chance to check out the weatherproofing on the scope room.

    I want to make sure there is plenty of ventilation in the scope room to avoid condensation, so I am reluctant to seal up every crack.

    So far the news is positive.  A little bit of weeping from roof seams that I think I can fix with some judiciously applied silicone, and a little leaking in by the roof rails where I have some missing boards (more ventilation) that can be easily fixed. The real test is when we get high winds and rain as that could blow in through the various gaps.

    Also been some nasty rain in Mid Wales last 24 hours. Observatory is fine - house is leaking though!

    Roads badly flooded- had an epic 8 hour 'road trip' to Shrewsbury and back yesterday. Clocked up 210 miles to find a way round it all......


  5. Canon 40D - self modified to full spectrum sensitivity. Plenty on E-bay <£100.

    43512722205_048eb62da6_o.jpg

    NGC7000 taken with GSO 8" F4 Newtonian telescope, 0.7x ASA Keller coma corrector/reducer, modifed Canon 40D full spectrum camera @ ISO1000. Stack of nine images totaling 38 minutes of exposure


  6. On 04/05/2019 at 09:40, Trikeflyer said:

    Hi, I’m looking for some dark sky camp sites to stay at this year.  I don’t think I’m going to be able to get to any star parties due to timing. Can anyone recommend any good camping sites to stay at. I live in the West Midlands so Scotland is probably out due to distance but most other places will be do able.  If you know of anywhere and ar3 happy to share the details please can you post a link for me.

    Thanks

    Steve 

    North or Mid Wales- no too far from Brum. Llyn Peninsula is worth a look too. Brecon.....bit near the LP sources in the South

    25026413687_cc5fc7a98d_o.jpg

     

    • Like 1
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