Alien 13
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Posts posted by Alien 13
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I have the Celestron version of the Mak (almost identical) and is is a great little scope for Moon and Planets and plenty of the brighter objects out there. It is my favorite scope that I own.
Alan
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I find Polaris gets more difficult to spot as the sky darkens when looking through a polarscope, its much easier during twilight or having the LED illuminator (if its possible with the SA) set to a higher intensity so all the fainter stuff gets washed out.
Alan
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Supply and demand, I am a bit surprised its not at an even higher price, the AZ GTi mount was released ages ago and is a rare as hens teeth even now.
Alan
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As with 99% of scopes of this type you need a 2 inch extension to get focus with a DSLR if using a FR/FF you can get focus without any other adapter, not sure about a flattener only though...
Alan
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That sounds like a good idea, I would like something similar that could be used on nights of interest like Meteor showers etc.
Alan
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20 minutes ago, happy-kat said:
Will the ED glass be corrective enough at f4.8 to squash any CA if used with a camera?
I think that there is a reasonable chance it might, CA is a function of f ratio and objective size. I can only find this old chart for normal achros but it gives you an idea.
If you extrapolate down to an imaginary 50mm objective it would suggest even normal glass would be ok at around f/6.
Alan
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This scope ticks all my boxes, travel scope, correct image finder, guide scope, mini white light solarscope, camera lens and it does have style and good looks...
Alan
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5 minutes ago, Anthonyexmouth said:
yeah the screen flips out and i did zoom but maybe the cold made me rush. i have usually used BYEOS to focus but may try more with live view just to see how it goes. wish my focus rings were a little stiffer and not so slack
The slack focus rings are a bit of a problem with the kit type lenses but I think there are a few tricks to stiffen them up like a tiny bit of blutack, worth having an internet search. As said the polar alignment on you image looks good and focus is not far off with all the tiny dim stuff in the image so I would say a great effort.
Alan
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My personal experience is that the camera live view screen (even better if it flips out) is miles better for focusing that any PC screen can manage, use the x 5 then x 10 zoom options and focus on the realy dim stars (these wont show up till focus is very close to optimal).
I expect I will get flak for this but do try it and check the in camera settings for ISO which should be temporarily turned high/shutter speed to 20 Seconds and play with the live view screen simulator options too, after focus is set then change the settings to the required positions.
Alan
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2 minutes ago, SilverAstro said:
True ! I am conflicted on this junk / novelty aspect.
Every satellite needs, now, to have an end of life plan. Usually to de-orbit and burn up. So by rights the final burn should have been to lower perigee to cause the no longer needed dummy load to return to Earth, not to raise its apogee to 'out there' ???
I wouldn't be surprised that at sometime in the future that Mr Musk will re capture the car and return it to Earth, after all that sort of mission will be vital for any Mars exploration.
Alan
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39 minutes ago, bingevader said:
Sorry, I'm with the, "Yet more space junk!" brigade.
Just because he can, doesn't mean he has to....
It was either a nice shiny car or a block of concrete, the ship needed a payload of some description...I know what I would choose.
Alan
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My initial thoughts are to stick a DSLR on it and image, I like the new green livery btw.
Alan
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2 minutes ago, Peco4321 said:
I just can't stop being amazed by this. I know the marketing machine is doing extremely well here, but the images are breathtaking.
Agreed but what a marketing ploy the first car in space but well deserved, has to be better than another spy satellite though.
Alan
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6 minutes ago, Peco4321 said:
3 favourite images.
Great images, the "dont panic" one will be my favored screen saver for quite some time, just brilliant..
Alan
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1 minute ago, michaelmorris said:
WOW, WOW, WOW, WOW, WOW, WOW .....
Couldn't agree more apart from an OMG at the end.
Alan
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Four minutes
Alan
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Nice, go Elon
Alan
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As above, weight is not the only issue focal length is important, I personally think scopes like the ZS61 are fine but getting close to the upper practical limit for AP but that doesn't mean you cant use a small Mak or similar for visual or Planetary/Lunar imaging.
Alan
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I dont have one but would be handy for storing Camera lenses, I do however keep some bits of Cedar wood in all my camera bags, it keeps those tiny bugs who love to crawl inside lenses and cameras away.
Alan
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6 minutes ago, catman161 said:
I initially started out doing something very similar but in a much more crude way years ago by fitting a plumbing part called an end stop to a Nikon right angle finder and just push fitting it over the polar scope on my old NEQ6 - worked a treat. Now I use a QHY pole master camera. No more achy back or cold/wet knees
The pole master has certainly improved things but the simple RA finder is still useful for portable mounts like the Star Adventurer especially if running it unteathered etc.
Alan
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8 minutes ago, nightfisher said:
That is about the only scope i would consider othewise i am happy with the 127 Mak and 90mm opticstar widefield
I think I would be happy with those too... I have a similar pairing but scaled down a little, perfik in my opinion.
Alan
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I had my led fitted to the side with a reflective strip around the circumference but oddly enough a bight light actually helps to find Polaris as when doing polar alignment during twilight hours, its very hard almost impossible to pick it out when its totally dark.
Alan
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Great result, I have been using my RA camera finder for years, great piece of kit maybe FLO should consider selling these with adapters for any mount that has a polarscope, they are quite useful on straight through finders too.
Alan
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I just got this tripod which I will use with the SW AZ GTI mount
It does go lower with the legs splayed out, about 12 cm tall I think which will be perfect for a DSLR/lens combo.
Alan
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What did the postman bring?
in The Astro Lounge
Posted
The full workshop manuals for Alienware laptops are usually freely available off the Dell website should you want to take it apart, might just need a blow out though through the exhaust ports.
Alan