Jump to content

Banner.jpg.b89429c566825f6ab32bcafbada449c9.jpg

Dave scutt

Members
  • Posts

    853
  • Joined

  • Last visited

  • Days Won

    4

Posts posted by Dave scutt

  1. 3 minutes ago, Sunshine said:

    Wow! I find that fascinating as it is smacking obvious to me, the difference between the dots that make up the text and the surrounding dots is red/orange text and green backdrop. So I guess it means you are red color blind.

    Does it say I need a new scope

    • Haha 4
  2. 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 

  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
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.