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oldannie

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Everything posted by oldannie

  1. PS - had forgotten about Budget.astro and I do like Doug's presentations - very easy to follow so thanks again. Annie
  2. Am fairly new to CCD imaging, (mono Atik 460) and have managed to acquire 14x300 sec Lum and so far 13x120sec each red and green for the Pleiades. Mid Wales has not provided much in the way of clear nights and on the only recent starry night the clouds rolled in when I was just half an hour short of acquiring the rest of my data 13x120sec blue! I stack in DSS and process in PS cc. Am not too bad at processing nebulae and combining Ha data with RGB but this is my first attempt at a star cluster so any tips on how to process it would be really helpful. For instance after stacking do I need to do much with the Lum data before combining with the RGB .
  3. Only just started looking at this section and it's fascinatiing. Very impressive Mars sketches. Annie
  4. Fair enough - I can see what you mean by ending up with an uneven background - can I not address that in photoshop? I had been looking at Ruben Keir's book 'The 100 Best Astrophotography Targets' in which he suggests 25x120sec R & G but 45x120 sec B. It was however published in 2009 so maybe it doesn't reflect current thinking?
  5. I want to make as good an effort as possible to image Pleiades as a friend has just named her little girl Maia so thought an image of Pleiades would make a good present. I image with an Atik 460 mono and Takahashi 106, 530mm scope and have not yet tried Pleiades. I thought that 2 min exposures would be good but wondered if I should take quite a few more with a blue filter than R & G? There have been so few clear nights here in mid Wales that there's not much opportunity to practise! Annie
  6. Straton is a piece of software designed to remove stars though it doesn't work on all targets. When it does it's very effective and easy to use. As far as I am aware it works independently - I use it in con junction with PS. It's cheap if I remember correctly. Steve Richards mentions in his latest book 'Dark Art or Magic Bullet'. Annie
  7. Another one for DSS. Though I may move on to APP I've used DSS for three years now on Windows 7 & 10 . Quite straightforward to use, free, so nothing much to lose by trying it! Annie
  8. I find Adam Block excellent - I have his 'Dimensions of Photoshop'. It's not a book but comes on a memory stick. More recently he covers Pixinsight I think. He works with an American university, is a very good astro imager and clearly has a 'good brain'. Annie
  9. First of all I love your image, some great data you've collected. I've yet to process in narrowband but was intending to follow the instructions of Steve Richards in his recent book, 'Dark Art or Magic Bullet' where he talks about using the Selective colour dialogue box in PS - for hubble palette images. Am sure others will know far more about this than me! Annie
  10. I'm told that solving 'little' problems like this is all part of the fun of practical astronomy!!!!! Have fun! Annie
  11. I had a go at the process Olly kindly outlined for me but for some reason couldn't get it to work for me so tried another way and came up with this result though not sure about it. I will have another go at the way Olly suggested as it should work and would like to find out where I went wrong.
  12. Thanks Olly - the colour image is entirely unprocessed. I rarely use saturation. The rest is new to me and am looking forward to having a go at that and will post my result. Don't hold your breath though as I'm a slow learner - well with deep sky imaging I am!! Cheers Annie
  13. My first two attempts at imaging using a CCD set up resulted in lots of star trailing and other odd artefacts on quite a few subs. (and lots of frustration!) Eventually I discovered a faulty connection between filter wheel and power so last night decided on a short image run in the hope that a new cable resolved the issues. Though not the ideal fov for Takahashi fsq 106ed and Atik mono 460ex after reading another thread I decided to have a go at the Heart nebula - 12x300sec Ha and 4x300sec each for RGB. It looks as though a new cable was what was needed. No sign of trailing or any other odd artefacts. Have stacked and aligned in DSS, processed the stacked Ha in PS cc and merged the RGB channels in PS. Is my processing of the Ha somewhere near what it should be? Also have not had any success processing the merged RGB - I can't seem to get much definition and wonder if that's something to do with the fov or just poor processing skills? Am attaching the unprocessed merged RGB - is it possible to glean anything from this. Unfortunately my broadband speed is so low that uploading anything other than JPEG's is nigh impossible. I was hoping to use this image to practice other techniques and was thinking I would try blending the Ha with the red channel? Should I then use the Ha again as luminance? Am in any case going on to re-visit Carole's excellent u-tube videos which cover some of this. Annie
  14. Thanks Stu - I think once this season has finished I'll have a go. Annie
  15. Thanks Stu - I think I may have been over reacting . I think the resistance is just at one point and I guess the clutches aren't the most sophisticated bit of engineering so it might not be unusual for there to be a sticking point. However the link will be useful in case a clean and re-grease is needed and I do like astro-baby. I used her when I set up my first mount the HEQ5 and found her instructions really clear. Just looked at the link - it's a good one. Thanks again Annie
  16. I may have the best of both worlds - I like imaging (well most of the time!) whilst hubby prefers observing. I do my imaging (with Joe's help from time to time) in a Pulsar whilst Joe sets his 12" Dob outside for observing!! This has however created a large black hole in our finances!! Annie
  17. Light Bucket - I suppose it was only to indicate that it hasn't been a trouble free mount. Sorry if I've confused the issue. I have little relevant knowledge about these issues so it's all a big challenge for me! To answer your question about whether the mount has ever been stripped down I did send the mount back shortly after buying it as I couldn't see through the polar scope because of grease marks. A new one was fitted and I was told it was not unusual to see small amounts of grease in the polar scope. In any case I don't need it now as I use the very excellent 'Polemaster'! Thanks again. Annie
  18. Thanks again Light Bucket. That's some helpful info. Will check out what you suggest. I didn't imagine it could have anything whatsoever to do with the wedge. Cheers Annie
  19. Thanks for the video Roland. It's just that I recall when I used to balance everything moved much more freely that it does now. It may be that I'm now over re-acting in an effort to get everything 'right' after my first experience of CCD imaging when I don't think I was careful enough!
  20. Thanks Light Bucket. Clutches fully released but more resistance than I recall, ie it doesn't swing as freely as I recall it used to. What might the serious issues be? have had the mount for some two and a bit years now and having had difficulties with both bolts right from the start resorted to an NEQ6 Wedge which has been brilliant.
  21. My first attempt at imaging using a CCD showed a number of errors - poor focusing (my own fault for settling for 'good enough'!) and quite a lot of trailing so am going to be much more pedantic about everything next time I image. I've re-organised my cables and want to make sure everything is balanced. However when I tried to balance the scope the mount showed a lot of resistance so it's difficult to tell how accurate I've been - I don't recall it being as stiff as this the last time. Is this normal for an NEQ 6.?
  22. ps. polemaster does need the right adapter for your particular mount.
  23. I also use polemaster - brilliant piece of software. Does exactly what it says with no fuss and great on-screen instructions. I've used my ZWO asi 120 for lunar and planetary.
  24. Thanks Carole. I may take some RG&B stars but hold them in abeyance whilst I work out how to do the rest. Managed to combine my Ha with RGB (Crescent nebula) thanks to your U-tube video which was really easy to follow. Keep them coming! Annie
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