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Scott Tilley

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    Newark, Nottinghamshire

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  1. Hi, thanks for the information. I think I need to upgrade my copy of photoshop, I have photoshop CS I think its so old it doesn't have any of these filters!! I will certainly have a go at finding the sweet spot on the lens. Cheers Scott
  2. Hi Rich, yes most of the new stuff is with the Tamron 150-600. This is part of the dilemma really! You can get good shots with the Tamron but the only difference between it and a Canon prime for instance is that its "sweet spot" area is much narrower than the 300 F4 would be for instance. What that really translates to is a higher percentage of shots as keepers. As wildlife photography is generally done in low light you can imagine that with the Tamron you are constantly edging the settings towards that small area when you know the shot is going to come off. The Canon would just enable me to improve my number of keepers. I Think the 300 F4 and 200 F2.8 both work with the Canon Converters so they both still have the potential for shooting wildlife. Decisions Decisions!!
  3. Hi all, I currently shoot with a modded 450D and my lenses are 18-55 kit lens, an old carl zeiss 50mm jena, Tamron 90mm macro, and a tokina 11-16. I also have a Tamron 150-600 which isn't really suited to astro photography. I am looking to get a new lens and am stuck between the Canon 200mm f2.8 and the Canon 300mm F4. Normally I would go straight for the 200mm as I have seen some good reviews for it for astro. However, I am also a wildlife photographer which makes me lean more towards the 300 as this would be more useful to me and I could get duel use. I just wondered if the 300 is way behind the 200 for astro? If so I will go for the 200 I'm not sure if weight is an issue as this would be on my Star Adventurer mount. Thanks in advance. Scott
  4. It's interesting to know what its sweet spot is. I will try it at this setting next time out. Unfortunately I couldn't find any in depth review of the lens for astro imaging so wasn't sure what to go for. Thanks Scott
  5. Here's a single sub. All the same I think! Thanks for the help!
  6. Managed to get the camera out for an hour last night and managed to find a spot of sky that had the least thin cloud and where I was avoiding the smoke from a neighbours bonfire. This was shot with a Canon 450D astro modded and a Tokina 11-16 lens ISO 800, F.3.2 at 16mm. There is about 50 minutes of date here made up of 180 second subs. I know my processing skills are rubbish and I have to work on it but I am a bit disappointed with the star distortion at the edges of the frame. Does anyone know if this is normal for this lens or is it something I'm doing? Thanks for looking.
  7. Here's my attempt at Catalina from this morning. 25x35 seconds with canon 70d and 150-600 lens at 600.
  8. Hi, yes was trying to. As I said it took an age to work through and then kept telling me it wasn't responding with <1 second remaining! Very frustrating, especially when you've waited for it to run through to the very end. I've not worked out what I was doing wrong yet. I think I switched this shot to having the comet focussed and the stars trailing but after about seven botched attempts I can't be certain!! Scott
  9. Another attempt at Catalina from early Friday morning. This time I used star adventurer with canon 70d and my tamron 150-600 at about 250mm. Must say this lens is so difficult to focus and I'm not sure of its quality for this type of work. I'm not sure if I should invest in a canon 300 f4 prime as thats a cracking lens for my wildlife photography as well or go for a small scope such as an altair astro 70 purely for astro imaging. Then I'm not sure if the star adventurer would cope with the weight? Decisions decisions!! I also had problems with DSS with this one as well. I'm not sure if I've mucked up the comet settings as it kept getting right to the end and less than one second to producing the final image before locking up! I did get something out in the end but again not sure how many it stacked, I think about 14, 35 second exposures. As always my photoshop skills are suspect!!!
  10. Hi Wim, thanks for taking the time. Your workflow is really useful, I've printed it out to try and work through on the next image I produce. That's presuming we ever see a clear sky again! Thanks Again Scott
  11. Superb image,we have been encapsulated in murk for days! Scott
  12. Hi Wim, than you so much for the offer. I have uploaded the 16 bit tiff to my google drive. I just need to know how I give you access to it. many Thanks Scott
  13. Very Nice image, I was out this morning myself to have another go but we where under the cloud (thanks BBC weather! Not). I could see the cloud edge further up north, Swaledale was the place to be!!
  14. Hi Wim,I'm not sure what you mean with regard to background correction. My processing basically (and I mean basic) consists of stacking in DSS and then doing multiple small stretches in PS and then darkening in curves as the background gets too light. I have just got the Prodigital software plug ins specifically for astro-photography so may also use these to get rid of light pollution or noise etc. Scott
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