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Dr_who Dr_who is offline

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  1. DeadJohn
    05-17-13
    DeadJohn
    I have an SVR-80ED doublet. I think all of Stellarvue's ED scopes are by definition doublets. I bought the doublet for weight and cost considerations; it's a great "grab&go" scope.

    Knowing what I know now, I wish I bought a larger triplet. My astronomy hobby has evolved to more astrophotography and less visual observing. Doublets show a little purple fringing around bright stars during long exposures. I see no fringing during visual usage, just in photos.
  2. SointulArt
    12-18-12
    SointulArt
    This may be helpful: Stacking in PixInsight

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  • Last Activity: 4 Days Ago
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  Latest Likes Received Date Posted By Comment
1 like DA* 11-18mm f/2.8 is to have a defog option for... 10-23-18 11:35 AM FozzFoster
1 like Irix Dragonfly 150mm Macro 09-20-18 08:17 AM Seb
1 like Irix Dragonfly 150mm Macro 09-19-18 03:14 PM lukulele
1 like D-FA* 85mm f1.4 also coming 09-19-18 02:53 PM Fenwoodian
1 like why I won't buy a k3 (Warning: Satire Thread) 08-26-18 09:42 AM Racer X 69
1 like K3 sample shots ... post here ! 08-15-18 04:46 AM Doundounba
1 like DFA 15-30 -- confidence 08-11-18 04:26 AM rtmarwitz
  Latest Likes Given Date User Name Comment
1 like Photokina, Ricoh has Confirmed 09-08-18 09:55 AM MrNPhoto
1 like DFA 50/1.4 mini review 07-27-18 11:53 PM Sunburn
1 like Cygnus Milky Way 07-27-18 03:30 PM bdery
1 like HD Pentax D FA 1:2.8 15-30mm ED SDM WR lens club! 10-10-17 04:18 PM mikeSF
1 like Post your K-1 pictures! 11-17-16 07:39 AM bpv_UW
1 like Post your K-1 pictures! 08-08-16 04:13 PM Rondec
0 likes Post your K-1 pictures! 07-05-16 12:04 AM colodion
Dr_who has received a total of 16 Likes | View All of Dr_who's Liked Posts | View Posts Dr_who Likes

Latest Threads

Thread Forum Last Poster Replies Views Last Post
TheCameraStore Hands on Field Test Pentax K-1 Racerdew 36 3735 05-16-16 10:39 PM
Will astrotracer work on K1 Pentax K-1 ajack 4 1016 05-11-16 02:05 PM
Camerastore 10 things K1 Pentax K-1 Not a Number 4 861 05-10-16 01:29 PM
Trioplan 50mm Kickstarter Pentax SLR Lens Discussion arnold 6 879 05-07-16 11:17 PM
Pentax 15-30 Coma question Pentax SLR Lens Discussion johnc 5 1378 05-05-16 01:00 PM
Ricoh Booth at McBain Tradeshow Pentax DSLR Discussion lesmore49 26 2436 11-10-14 08:18 AM
Landscape M31 Pentax K-3 Photo Contest wallygoots 19 1739 06-24-14 06:22 PM
Pentax Flucard available in Canada Pentax K-3 Sandy Hancock 29 2906 03-14-14 01:01 AM
horizontal correction calibration? Pentax K-3 mgvh 42 6045 12-10-15 10:29 PM
Pentax at Edmonton Photographic Tradeshow Pentax K-3 Joel B 1 1082 10-21-13 07:31 AM
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