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David_Evans

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David_Evans last won the day on June 24 2013

David_Evans had the most liked content!

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About David_Evans

  • Rank
    Nebula

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  • Website URL
    http://www.coleshillastronomy.co.uk

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  • Gender
    Male
  • Location
    Coleshill, North Warwickshire, UK
  1. Very nice DrRobin. What image capture program and stacking software do you use? I'm using IC-Capture and Registax-6. Dave
  2. Thanks Freddie and Steve. Yes, a lot of new sunspot regions due in the next few days. The first can be seen this morning (30 July) with more to follow.
  3. Just sufficient time this morning for two quick images; the sky then became overcast with heavy rain. Active region 1532 and prominences, SE solar limb. 30 July 2012, 09:08UT An enlargement of the above image for a close up view of 1532 (size of Planet Earth shown to scale). Dave
  4. A beautiful fast moving prominence ejected from the SE Solar Limb. 28 July 2012, 15:47UT 60mm SolarMax Filter / 30mm Blocking Filter. 80mm Vixen F11.4, DMK31AU03.AS 2.5x PowerMate. Dave
  5. Hi Josh. I used a DMK31 mono CCD.... Two images stitched together. Each image 1000 frames, 30fps at 1/1250. Colour added in Photoshop Elements.
  6. More sunny blue skies in central England today... Active Sunspot Regions and Dark Filaments. 29 July 2012, 12:41UT. 60mm SolarMax Filter / 30mm Blocking Filter. 80mm Vixen F11.4, DMK31AU03.AS Dave
  7. Thanks guys. We've had a lot of good weather in the UK over the past week. Quite steady atmosphere too..., great for solar imaging. I hope to add more photo's soon.
  8. There are some beautiful prominences on view today... 28 July 2012, 15:47UT 60mm SolarMax Filter / 30mm Blocking Filter. 80mm Vixen F11.4, DMK31AU03.AS (Top left image) SDO/AIA 211, 193, 171. Dave
  9. Thanks Mark, I've just used a 2.5x PowerMate to image the proms... The atmosphere is very turbulent at the moment... If successful I'll upload the photo in a short while. Dave
  10. Thanks Ken and Ant. The light background is applied during the processing stage. I use the 'replace colour' procedure in Photoshop Elements. Dave
  11. Good weather in the UK today A bright sunny morning with very few clouds and a nice blue sky. There is a lot of activity towards the south-east solar limb.... Four large single spots, three big prominences and a filament! Here is an image that I captured at 08:51UT with my 60mm SolarMax Filter / 30mm Blocking Filter, 80mm Vixen F11.4 and DMK31AU03.AS camera. Although cloud is now on the increase in central England (50% at 12:46UT) there is still plenty of opportunity for more imaging. If the air remains stable I'll try a 2.5x PowerMate on the proms. Regards, Dave
  12. David_Evans

    H-alpha solar images

    The h-alpha sun imaged with a 60mm SolarMax front filter and a BF30 rear filter, attached to an 80mm Vixen F11.4
  13. Hi Relisys, I'm David Evans. I live in Coleshill just a couple of miles north-east of Chelmsley Wood. I mainly observe the Sun in h-alpha using a 60mm SolarMax front filter and BF30 rear filter attached to an 80mm Vixen F11.4 refractor. I also have an 8" Meade SCT and Celestron 11" Edge HD. The C11 is housed inside a roll-off roof observatory that I built in my garden a few months ago. Delighted if you would like to make contact.
  14. Thanks for your advice Nick, very much appreciated... Do you have any photo's of the mod? Anyone who has successfully modded their PST please do get in touch. Kindest regards, Dave
  15. Thank you Adrian. I am using HandyAVI to capture two monochrome AVI movies. The first is exposed for the prominences and the second exposure adjusted for the disk features. Each movie contains 300 frames which are then stacked using Registax5 and wavelets are applied. Adjustments are then made to the prominence photo using Photoshop Elements 4 to create a good contrast image with almost black background and nice red prominences. The disk layer is then contrast and colour adjusted then cut-and-pasted on top of the prominence image as a new layer. Finally, the layers are flattened and the final composite image saved. I also use Neat Image (freeware version) which I've installed as a filter in Photoshop for enhancing the high magnification images. Neat Image can also be downloaded as a standalone program. Hopefully if I am able to modify my PST to increase its aperture I can squeeze out perhaps four times as much detail. It's certainly a project I'd like to try. Kindest regards, Dave
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