Jump to content

sgl_imaging_challenge_2021_2.thumb.jpg.72789c04780d7659f5b63ea05534a956.jpg

Baader 610nm longpass filter


Recommended Posts

I have just sold some books so thought I'd treat myself to one of these filters. I have wanted one for a while to see if it provides sharper detail on the moon and easier splits on things like Sirius when seeing is poor.It may go nowhere but will be interesting to see what it's like.

They seem quite uncommon used so I should be able to sell for not too much loss if it turns out to be less effective than I hoped. There does not seem to be much about them online for visual although some planetary imagers use them to cut through bad seeing.

I'll report back when it arrives but I suspect it's not in stock where I bought it so might be a week or two before it comes.

Cheers

Shane

Link to post
Share on other sites

A red filter certainly makes a difference to sharpness when imaging the moon and if there is enough light (bright object) you won't have the same limitation as trying to 'see' H-alpha in DSO's with a dark adapted eye. I can see the logic in it. 

Link to post
Share on other sites
  • 2 weeks later...

it arrived today and my first impressions are that I have made a mistake. I looked through the scope at a decent magnification and could hardly see anything. I turned to Capella and even this was not the shining beacon it normally is. I took it out and looked with naked eye and only magnitude 1 or brighter stars were immediately obvious although the glow of the moon was showing above the houses. in fact I compared the light levels passing through the filter with naked eye and the Hbeta filter I have and the Hbeta looked positively bright by comparison (albeit green in tinge). I think this is an indication as to why the red filter reveals little in the way of stars. red light is perhaps less usable by our eyes than green light (certainly I find reading a star map easier with a green torch than a red torch).it

 will be interesting to see the moon / Mars with the filter and if it means I can split Sirius, get improved detail on the moon (not that it's bad currently of course) and Mars then maybe it's worth it. but I suspect I'll be selling this one on and maybe getting a good quality (perhaps Lumicon) red filter instead.

Link to post
Share on other sites
  • 1 year later...

to be honest it's still sat in my filters/finders box. I put a couple of small scratches in the coatings trying to clean off a grease spot when it arrived and was so brassed off I put it away and have not really used / tried it since. it's still usable though and I may well try it again with the big dob at some point.

Link to post
Share on other sites

Is it not a Baader filter? I didn't think you could put scratches in to the coatings on them. If anything my guess they would only be surface swirls. Can't be as bad as the amount of floaters I counted in my left eye blocking the view to observing Jupiter the other week :sad: .

Link to post
Share on other sites

yeah it's a Baader but definitely scratches. I have looked with a hand lens.

Not visible when in use to be fair.

Not a big deal. could not even sell it for a tenner so kept it!

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Rolland Balazs
      Atik One 6.0 CCD + OAG + Astronomik filters + Atik-Eos adapter
      Include:
      - Astronomik II. LRGB; 6 nm Ha, SII, OIII filters
      - Unique Atik-Eos WORKING adapter
      - Power supply, USB cord
      - Pixinsight dark, flatdark, bias files
      Tape is against light pollution only. Of course some sketch on it but working perfect.
      Lacerta guide cam exclude.
      Bank transfer only.
      2.660,-GBP (2.999,-EUR) + postage.
      <private contact details removed>
       
       










    • By knobby
      Hi all, been doing some back space adjustments on both scopes and have a few filter / adaptors thoroughly stuck . What do you all use to 'unstuck' them ?
      @mods, wasn't sure where to post this so feel free to move.
    • By elbaztardo
      Atik Horizon Mono
      EFW2
      Baader NB and LRGB Filters
      Boxed with cables.
      Looking for £1500\€1600
       
    • By daz
      Hi all
      I have the following filters for sale. Boxed and include UK postage. All are 1.25" and optically perfect.
      Baader 35nm H-alpha - £45  REDUCED TO £40 Altair #ND96 0.3 and 0.6 - £15 (pair)  
      Payment by bank transfer please.
      Thanks for looking!

       

       
       
       
       
       
    • By Corpze
      Hi, I just published a video of how I am cleaning my filters - I thought I might do this while my telescope is back at service due to some kind of astigmatism.
      How do you guys clean your filters? it seems that every dust particle finds it way to the filters just as you are done cleaning them, and to sit in a damp bathroom seems kind of a mess...

      Anyway, here is the video
      / Daniel
       
       
×
×
  • 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.