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WhiteRhino

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Posts posted by WhiteRhino


  1. Can anyone help? Im new to the world of Astronomy and am deciding on which scope to go for. I didnt realise that my equiptment selection was going to be so difficult!!!...but i feel its important i get it right now so that i dont have any regrets later on, down the line!! As i also have a keen interest in imaging i believe that the Skywatcher Evostar 100ED DS-Pro Outfit would certainly be capable of producing some good images.

    The reason i say this, from what i understand and please correct me if im wrong... for observation purposes a large aperture is key for better viewing. But for imaging aperture size is less important due to the fact when shooting images and the extended length of each exposure (whatever that maybe) more light is captured thus producing a quality image. Furthermore the scope mentioned above is less likely to suffer from halos and coma distortions due to its achromatic and ED lenses.

    However my question is....given it only has a 100mm aperture, what could i expect to see in terms of observation with the mk1 eyeball and to what detail and clarity? For instance will i be able to focus to a reasonable level of detail on the planets and some deep space objects??? or am i going to end up having to purchase 2 scopes? :)


  2. Can anyone help??...Im new to the worlds of astronomy and astro photography. So please excuse my ignorance...ive never owned a telescope.

    Ive just bought the very good book ''Make every Photon Count'', which indeed is very helpful in choosing the right scope for me... which i have decided on the Skywatcher AP ED120 for imaging.

    However Steve (the auther) talks about purchasing an EQ3 mount to start out with, which of course does not have Goto, so i understand the need for a guide scope. Im thinking about getting an EQ6 as it is a more substantial mount which does have said technology. With this in mind, will i still need a guide scope?? :)


  3. Hi everyone been away for a couple of days so not really been able to keep upto date.

    Whilst i was away i have been busy snapping away taking wide field shots of Orion...around 200 of them at 32mm at 20sec exposures along with several flasks of tea and lots of jumping up and down to keep warm!!

    I havent stacked or processed them yet, however at first glance the images appear to be quite good.

    As far as live view is concerned on my A350...i found that for widefield AP its not really much use. I suspect though that, this is not a flaw with the Sony, rather the resolution is just not high enough on the screen to process the small amount of light emitted from the constelations into a picture on the screen. Either that or given the fact i live in Manchester and the large amount of polution is preventing me from using the screen?? Anyway i ended up using the viewfinder!!!

    I cant comment on how the live view performs whilst using a scope as i dont yet own one but from what i have learned so far as a newby to the world of astronomy and AP, is that for the purpose of AP im going to invest in a cheap second hand Cannon body then have it moded and keep my Sony for terrestrial photography. I love my Sony and would not trade it for anything, but i have to concede as far as AP goes Cannon seems tolead the way in terms of support and accessories etc. Its also worth pointing out from the research ive carried out that the Cannon seems to perform slightly better in that they dont seem to suffer with ''quite'' as much noise. Though i dont have personal experience of this.


  4. Well...i eventually managed to produce 2 images .....of sorts!!!!

    Hardly mind blowing though. Bearing in mind, i was using an 18mm wide angle lens on my dslr. First image consists of orions belt and taurus (i think...remember im new to this!!...so i could well be wrong!!)

    As far as processing goes...there is an awfull lot of pollution!! But knowing what i know (which is next to nothing) i have managed to reduce a lot of it...though it might not seem it!!

    Help and advice welcome. :)

    post-32233-133877717401_thumb.jpg

    post-32233-133877717407_thumb.jpg


  5. Hi Spikey,

    Thanks so much for your advice, i really do appreciate it. Was up until 7am trying to figure out what i was doing wrong!! As it happens, i did have '2xdrizzle' enabled, so im going for round 2 tonight and will report back!!...hopefully with better news. I do have quite a bit of data to play with. Ive made the most of the good weather over the last week and spent my evenings outside freezing my socks of taking photos. Lets hope i can produce something half decent.


  6. Can anyone help???

    As a newcomer, i was out last night taking some pics of Orion and Taurus. I took 2 sets of ten images with 5 dark shot of equal exposure.

    Downloaded Deepspacestacker and had a go at stacking...but with no success!!! Grrrr

    I followed the intructions on DSS website to the 'T'. But as the program goes through its process of stacking the images...i get the message 'Out of Memory' just as its saving the image after the very long process. How annoying is that ???

    Anyway, i closed the program, restarted it and opened the autosaved image. To the edit histogram page (with the grey image...which i believ is correct). Managed to produce the right curve in the histogram, but then click apply...and nothing happens!!

    Can anyone help???? Arghhhh!!!

    Was up all night until 7am trying to do this!!! :) Got matchsticks holding my eyes open.


  7. Hi John, Spikey

    Thanks for your feedback. Was out last night taking some pics of Orion and Taurus. Downloaded Deepspacestacker and had a go at stacking...but with no success!!! Grrrr

    I followed the intructions on the link you kindly provided me with John and also the instructions on DSS website. But as the program goes through its process of stacking the images...i get the message 'Out of Memory'. How annoying is that ???

    Anyway, i closed the program, restarted it and opened the autosaved image. To the edit histogram page (with the grey image...which i believ is correct). Managed to produce the right curve in the histogram, but then click apply...and nothing happens!!

    Can anyone help???? Arghhhh!!!

    Was up all night until 7am trying to do this!!!


  8. Hi Keith, thanks for your reply

    Sorry, yes your right you can buy other lens for Cannon and Nikon. However my point is this...casting my memory back to when i bought my camera, i also priced up a Tameron 300mm lens. Now at the time i bought mine for £99 from Jessops. The same Tameron lens for the Cannon was £149 and Nikon was £159...quite why this was, i dont know? But you see my point.

    As far as image stabilisation goes..i stand corrected...i honestly thought Sony were certainly one of the first to produce in body stabilisation...everyday is an education :0)

    As far as your advise goes concerning keeping the Sony, i do see your point. I was initially considering buying a second hand Cannon body for the purpose of AP. The reason being as jgs001 has kindly pointed out...the Sony suffers with a little more white noise than the Cannon (thanks John). I guess i'll have to find out for myself.

    Kind regards Jamie


  9. Hi Spikey,

    Yes i did realise you were talking in terms of AP, however as a complete novice im not really in position to comment as far as AP goes and the Sony. I guess thats partly why i started this thread, was to find out the Sony's suitability and performance. I shall certainly bear in mind what you have said though. Its not something ive thought of.

    Many thanks. Jamie


  10. Hi Sara

    Yes your right, under normal circumstances i would process in RAW and take the shot without any WB presets.

    On this occasion and as a newby to the world of Astro Imaging i was merely experimenting to see the differences in moon images i could produce using camera WB settings combined with various shutter speeds and F numbers.

    I know on that particular i took nearly 500 shots!!... and i just happened to like this particular one. It hasn't been processed at all, only cropped.

    Hope that answers your question? :0)


  11. Hi guys,

    Firstly thank you for your replies..greatly appreciated.

    It looks like that for the sole purpose of astrophotography i will end up purchasing a Cannon....another expense!!!

    Though from a personal point of view i much prefer the Sony on a number of levels. Firstly is the lens choice... Because Sony bought out Minolta, Sony of course inherited the Minolta 'A Fit' lens housing. Thus users are not restricted to the Sony brand for choosing lenses, making it is possible to buy a range of lenses that suit every budget. Makers such as Minolta (goes without saying), Sigma and Carl Zeiss are to name but a few. One of the things that annoys me about Cannon and Nikon is the fact their own brand and lens fitting restricts the choice of lens available, forcing the user to pay higher prices for their own brand.

    A feature that helped sway my decision to go the Sony route was the camera body mounted stability switch rather than lens mounted. This of course means you can use older lenses. I realise now that other camera makers may have this feature now, but at the time i bought my camera, i think Sony were one of the first manufacturers to do this.

    Im not trying to take away the quality of Cannon or Nikon cameras, indeed not. Their quality is undisputed. However since Sony bought Minolta and after pumping huge investment into their cameras, they are producing some high end quality gear...but by comparison at a much lower price. I know that the camera model i purchased (and im trying to be as unbiased as i can be...honest!!) produces the equivalent quality images to mid - professional range Cannon and Nikon.

    Finally, and a biggy for me is the user interface on the Sony is much easier and clearer to use and navigate around...especially when comparing to Nikon. But thats just my opinion!!

    All that said i take your points as far as astro imaging is concerned and have to agree. All though my camera does have live view, it doesnt have the right software to utilize it for the purpose if astro imaging and i dont know of any software that will allow me to...but then as a novice i dont know...i'll have to look into it. I totally agree about support from other users, in terms of forums etc and Cannon being the most widely used. I think that alone is enough reason for a novice like me to go out and buy a Cannon body.

    Thanks again guys.


  12. As a complete novice to the world of astronomy and astrophotography (and I'm still saving for my first scope and mount) Can anyone tell me if Sony DSLR's are any good for imaging??....seems a silly question i know...however i've noticed during my short time on here that most people seem to be using Cannon cameras for imaging! Is there a reason for this?

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