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Dave scutt

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Posts posted by Dave scutt

  1. 7 minutes ago, Roy Challen said:

    I can't see what scope you have, but regardless of that, you will definitely need a filter of some kind.

    There are several types ranging from very cheap to very expensive. The cheapest is solar film. It looks like foil and shows the sun in white light. You can see sunspots and their surroundings with this. Glass filters that fit over the objective also show the sun in white light although they may show it as yellow/orange.

    Herschel wedges used in refractors, fit into the focuser. They're also white light, but can be used with filters to improve contrast. Often, the sun will look green.

    The most expensive are hydrogen alpha filters. These are not the same as imaging filters and block all wavelengths except the 656.28nm wavelength. This allows you to see the surface of the sun (chromosphere) or prominences.

    If that's what you want to look at, then you will need a hydrogen alpha scope, or a quark (a type of eyepiece that allows solar viewing). 

    Which ever you choose, exercise extreme caution when viewing the sun.

    Hi Roy.

    I have an opticstar 127mm  f9.5 I have a solar filter 760387894_Screenshot_20220115-154000_Chrome2.jpg.306d725779e89cd4358cd224262928fb.jpg so it's not worth buying an hydrogen alpha filter because I won't see the prominence 

  2. Hi all.

    I would like to start observing the sun,I see in most images you can see the sun spots is there any chance you can see the prominence. 

    Would I be able to use my current scope and solar filter, I don't want to burn my eyes out.

    Any help would be much appreciated. 

    Dave 

  3. My dob sleeps in the shed to make it easier for me to get in and out ,but my wife let's me keep my other set up in the spare bedroom just aswell all our family are still in the UK, don't get many family or friends coming to Ireland for a holiday.  I think it's great walking past and looking at it as it's not getting much use outside 508839401_20211229_1512262.thumb.jpg.af49b4252f19374aa3a6471423ffa3de.jpg

    • Like 7
  4. 2 hours ago, John said:

    A friend at Bristol AS (Chris) has pointed out that the feature known as "Thor's Hammer" is nicely on display as well tonight. And he is right ! :smiley:

    Worth a look while enjoying the mare Imbrium, it is near Mount Piton (not my photo):

    49855478477_1d8b91261d_b.jpg.d94f8534f7b91e5442c343c0c2da8c68.jpg

     

     

    Thanks for letting me know about Thor's Hammer I didn't know I captured it in my photo yesterday. 

    Dave 

    • Like 1
  5. 52 minutes ago, Franklin said:

    Looking good Dave. I had a very similar set up a while back and at that time I was using BST Starguiders, I had a 25mm, 12mm, 8mm and 5mm. They all worked very well with the 127mm -1200mm refractor giving 48x, 100x, 150x and a massive 240x respectively, all with a 60deg AFOV. The 5mm BST was pushing it a bit really, so I would use a 6mm BCO for 200x at 50deg. A sensible range of magnifications for a scope of that size. I had some really good views of the gas giants a few summers ago with that setup. Clear skies.

    I'll be using ES 82 6.7 ,8.8,11,14 will they be just as good

    • Like 3
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