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    SGL 2017 SP

ngwillym

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About ngwillym

  • Rank
    Star Forming
  • Birthday 23/11/54

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  • Website URL
    http://astro58.wixsite.com/havenobservatory

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  • Gender
    Male
  • Interests
    Astronomy, photography, golf
  • Location
    New Forest
  1. Sol WL, HA, Proms, loads of action 6-9-17

    Love that prom - envious - its cloudy here
  2. AR2674 & 2673 from 1st Sept

    A wide(r) angle view of both ARs on the disk ASIO1600MM-Cool at full frame, Quark, Opticstar 127mmApo, Baader 35nm filter as ERF MY, my - hasn't AR2673 changed over the last 5 days! And a close up of 2674 ASIO1600MM-Cool at 1/4 frame ROI, Quark, Opticstar 127mmApo, Baader 35nm filter as ERF I tried an animation of 2674, but quality wasn't good enough - image quality, colour, brightness all varied by frame. Any hints and tips on how to improve are very welcome. Regards Neil
  3. Sun 2017-09-05 massive AR

    Nice. all cloud here :-(
  4. heads up new spot alert 30-8-17 "updated"

    Good stuff charl. Now just hope fpor some clear skies over next few days - at least its stopped raining here now
  5. August 29, 2017: 66-pane mosaic in H-alpha

    Min boggling. The dedication need to do this never ceases to amaze me. Superb work
  6. Saturday's ARs

    Hi Charl, - yep 2671 kept it interesting. Latest images on GONG hint at something coming over the limb - fingers crossed. Weather here on south coast not too bad - some high haze and the usual fluffy stuff. Hopefully will last another day or so before the rain arrives. But at least the skies are getting darker so its the start of the night time imaging too. At least DSOs don't generate so much data :-)
  7. Saturday's ARs

    Even here in the UK we can get to see the sun a couple of days a week - the imaging itself can be done fairly quickly - for full frame stuff(using an ASI 1600MM-C) I get about 15 frames per sec and take about 5 -10 videos of 1000 frames, for the closer stuff - 1/4 frame of the ASI, I get about 50 fps and takes 5 -20 videos of 1000 - 5000 frames - so timewise - 1 -2 hours per session. Mind you it generates anything up to 1/2 terabyte of data to process :-)
  8. Saturday's ARs

    Managed to grab a few captures between the clouds. Bye-bye to AR2671 And my first pic of AR2672 Slightly wider view Still have soo much more to learn Neil
  9. Prom 18th August 2017

    My first attempt(s) at combined prom & disc. Even managed to squeeze in AR2671 ZWO ASI 1600MM-Cool - full frame (reduced to fit here), Opticstar 127mm Apo, 35nm Baader Ha filter as erf, Quark. best 300 of 500 frames, stacked in AS!2, processed in ImPPG (deconvolution/sharpening) and Photoshop CS5 (combining & colour) ZWO ASI 1600MM-Cool - ROI of 50% full frame, Opticstar 127mm Apo, 35nm Baader Ha filter as erf, Quark. best 250 of 500 frames, stacked in AS!2, processed in ImPPG (deconvolution/sharpening) and Photoshop CS5 (combining & colour) Stacked in AS!2 Still a lot to learn about solar processing etc. but I'm encouraged Spending far to much time dodging clouds :-) Neil
  10. Huge Prom alert. 18-8-17 07,30 "updated "

    Thanks for the heads up - managed to get a few short vids before cloud became to much of a pita. Hope to post results later Neil
  11. To be honest I'm not doing too much testing - just touch at the edges of the quark nosepeice - nice and cool. While I think of it, i might just fit the quark with its cover on and see if it melts next time :-)
  12. Flip Mirror for Mak 127/1500

    +1 for the Vixen - I use it with an ASI camera on both my 127mm apo and my C11. Neil
  13. I went through this loop a few months ago - having cracked a filter in front of my Quark - I suspected that the UV/IR filter was 'dodgy' - of dubious quality from a well known auction site - caveat emptor. However, I contacted Daystar directly - in April this year- after seeing a couple of threads on CloudyNights:- My question to them was:- I was just checking with you for confirmation that it is possible to use a Quark Chromosphere on a 127mm f7.5air spaced Apochromatic refractor with just a 2" UV/IR cut filter - i.e. without the need for any other type energy rejection filter - as per the discussion on CloudyNights forum - https://www.cloudynights.com/topic/527861-good-news-from-daystar-about-using-quark-ep-with-uvir/ Their response:- Yes, the UV/IR cut filter is a sufficient energy rejection blocking filter with your 127mm Refractor and to be doubly sure I contacted Rupert @Astrograph - who supplied my Quark - and asked about the 35nm Halpha filter - here's his reponse:- The UV/IR cut is often recommended as a simple ERF for systems. We have found however that there is quite a variation between brands. We have had most success with the Astronomik UV/IR and also Daystars own (I am not sure who makes that). Although it does not have the ‘hole’ in the Calcium H/K area as the other two have, the Baader UV/IR resulted in a burnt filter that was placed between it and a Quark (this is what happened to me), so we do not recommend that. In experiments we found that a 2” UV/IR was effective up to 100mm aperture but even with this you could feel heat in the beam that passed through it. While the Quark has a blocking filter in its nose which should kill any residual energy, We elected not to recommend use of a UV/IR above 100mm. The Baader 35nm Ha filter has proven very effective as an ERF. I have used it successfully with scopes up to 152mm. The beam behind it is cool, even on a 152. For your 127 I would definitely recommend it. For best results with an internal ERF, you should place it as far forward as possible. This is so it encounters the light beam when it is least concentrated. The filter is not stressed and will be more effective.. An internal ERF does cause some slight spherical aberration. However visually it is still better than a basic coloured glass front mounted ERF. The Baader front mount D-ERF is however far superior and offers a sharper image. I've been using my Quark on my 127mm Apo with the Baader 35nm filter since that time, with no problems hope this helps. Neil
  14. Couple of simple things to check first :- i) is DEC axis clamp fully tight? ii) is scope balanced?
  15. a hard won HA shot 27-7-17 11.15

    It will be back in about another 30 days?
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