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oldannie

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Everything posted by oldannie

  1. 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
  2. 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
  3. 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
  4. 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
  5. I'm told that solving 'little' problems like this is all part of the fun of practical astronomy!!!!! Have fun! Annie
  6. 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.
  7. 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
  8. 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
  9. Thanks Stu - I think once this season has finished I'll have a go. Annie
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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!
  15. 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.
  16. 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.?
  17. ps. polemaster does need the right adapter for your particular mount.
  18. 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.
  19. 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
  20. I recently imaged the Crescent Nebula in HaRGB as my first CCD image having recently moved from DSLR imaging. Not great but learnt a lot and it's still there for much needed practice on my processing. I would like to try a narrowband image next and would be grateful for some (well - lots) of advice! Is there any reason why I shouldn't try the Pacman nebula using Ha, O111 and S11 filters? My set up is Takahashi 106ed, Atik 460ex - mono, with EFW2 filter wheel and Baader filters. I image from a fairly dark site in mid Wales. Any other suggestions for a suitable target would be more than welcome - perhaps bi-color would be less complicated as a first attempt at narrowband? Are there any ground rules for determining the relative exposure times for each filter and what would be the minimum overall exposure time I should aim for? I've also read that narrowband can do strange things to stars and that one way round that is to produce a set of RGB stars - that being the case am I right in assuming I would only need to take short exposures of my target to produce R & G & B stars, ie 30 secs? This will all be quite a challenge for me but 'nothing ventured, nothing gained'! Annie
  21. ps - Olly when you mention making Ha subs longer do you mean each individual exposure or the overall exposure time?
  22. Thanks Olly that's very helpful info and I you're right about it providing an opportunity to learn a lot about processing irrespective. Dave - thanks for your last message. The reply afterwards related to the message before yours - if that makes sense!
  23. Here are two Ha subs - one looks ok , the other has stars trailing. Viewed via Avis Fits viewer the trails are obviously much more pronounced. Hope they post ok.
  24. No Dave my set up doesn't enable me to to view my guiding in real time so will def have to download the PC application for my MGEN so I can at least generate a guide graph. It's an interesting point about the stars being smaller with Ha subs - didn't appreciate that! Will try and post some subs as you suggest. Mant thanks Annie
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