Results 1 to 6 of 6
  1. #1
    Ian Robinson from Down Under's Avatar
    Ian Robinson from Down Under is offline Junior Member
    Points: 7,401, Level: 60
    Level completed: 26%, Points required for next Level: 149
    Overall activity: 0%
    Achievements:
    First 1000 Experience Points365 Days+ Registered Achievement!750 Days+ Registered Achievement!2 Posts Achievement1000 Days+ Registered Achievement!
    Join Date
    Jan 2009
    Location
    Gateshead NSW
    Posts
    12
    Points
    7,401
    Level
    60
    Thanks
    0
    Thanked 4x 4 Posts

    Default MC Arsat Yashma-N4 f2.8/300 mm Lens (manual focus) , anyone using or used one ?



    I am looking for a good large fast telephoto to use on my new Canon 40D for skypatrolling and general wide and deep imaging the goodies we have down here in our 33S lat night sky.

    I can not afford the offerings by Canon (EF 300mm f/2.8 L IS USM or Sigma or Tamron) new or used. Nor can I reasonably justify spending 4000USD on one lens.

    Have considered an old Canon FD 300mm f/2.8 L D which would require me to buy an adapter to fit the EOS bayonet and achieve sharp focus at infinity but ever these old lenses are not cheap. I'm doing this with my old Minolta XD5's zoom and telephoto lenses (all MD bayonet and the adapter seems to work OK from a couple of test fixed star images I've done with my old 200mm f/3.5 minolta lens).

    I have come across the MC Arsat Yashma-N4 f2.8/300 mm Lens which hails for Russia I think , the Russians are renowned for their cheap but superb optics and camera lenses.

    Looks like a nice bit of imaging kit, and the price is very reasonable at about 700USD brand new !!!

    If anyone has one or has used one of these Arsat Yashma 300mm f/2.8 lenses in astroimaging I'd appreciate your opinion on how they perform.

  2. #2
    Vinnie's Avatar
    Vinnie is offline Guest
    Points: 24,260, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    Got three Friends20+ Friends Achievement!First 1000 Experience Points5+ Referrals Achievement!100+ Threads Achievement!
    Join Date
    Sep 2008
    Location
    Queensland, Australia
    Posts
    3,474
    Points
    24,260
    Level
    100
    Thanks
    41
    Thanked 683x 362 Posts

    Default

    Hi Robbo

    I have no idea about the cameras you are asking about, but someone here most likely will.

    I can say welcome to AF! and I hope you enjoy being here!

    I know where Gateshead is and I've been there

    Meanwhile until we get the forum admin to look at this could you prune your location down a bit? No big deal but we have never had a member put such a long description, and so every time you post we are all on a big side scroll exercise.

    Thanks

  3. #3
    Ian Robinson from Down Under's Avatar
    Ian Robinson from Down Under is offline Junior Member
    Points: 7,401, Level: 60
    Level completed: 26%, Points required for next Level: 149
    Overall activity: 0%
    Achievements:
    First 1000 Experience Points365 Days+ Registered Achievement!750 Days+ Registered Achievement!2 Posts Achievement1000 Days+ Registered Achievement!
    Join Date
    Jan 2009
    Location
    Gateshead NSW
    Posts
    12
    Points
    7,401
    Level
    60
    Thanks
    0
    Thanked 4x 4 Posts

    Default

    Reluctant to spend 1200AUD on a FD 300mm f/2.8 LD that I've spotted.

  4. #4
    Vinnie's Avatar
    Vinnie is offline Guest
    Points: 24,260, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    Got three Friends20+ Friends Achievement!First 1000 Experience Points5+ Referrals Achievement!100+ Threads Achievement!
    Join Date
    Sep 2008
    Location
    Queensland, Australia
    Posts
    3,474
    Points
    24,260
    Level
    100
    Thanks
    41
    Thanked 683x 362 Posts

    Default

    Eeerrm Ian mate,

    I've only got a 19" screen and that probably applies to a lot of the members

  5. #5
    star drop's Avatar
    star drop is offline Guilty as Charged
    Points: 14,490, Level: 82
    Level completed: 98%, Points required for next Level: 10
    Overall activity: 0%
    Achievements:
    10 Days registeredFirst 1000 Experience PointsGot three Friends20+ Friends Achievement!365 Days+ Registered Achievement!
    Join Date
    Nov 2008
    Location
    .
    Posts
    2,265
    Points
    14,490
    Level
    82
    Thanks
    11
    Thanked 475x 211 Posts

    Default

    Hi Ian,

    Welcome to Astronomy Forum.

  6. #6
    admin's Avatar
    admin is offline Administrator
    Points: 6,989,798, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 5.0%
    Achievements:
    First 1000 Experience PointsGot three Friends20+ Friends Achievement!5+ Referrals Achievement!100+ Threads Achievement!
    Join Date
    Mar 2007
    Location
    Sydney, Australia
    Posts
    13,479
    Points
    6,989,798
    Level
    100
    Thanks
    18,563
    Thanked 7,915x 3,807 Posts
    Blog Entries
    2

    Default

    Hi Ian welcome to the forums mate
    Name: Gus OTAs: ED 100 PRO refractor, Orion ST80 (not the CF), 8" Dob stuck in Canada Mounts:HEQ5PRO Synscan mount, Manfrotto Tripod CAMS: Guidecam Philips SPC900 webcams (4), Canon unmodded-450D DSLR

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    |
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    | My Astronomy Blog

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


 

 

Similar Threads

  1. Adjustable Focus Camera Projection Lens
    By admin in forum Astronomy Digital Cameras Forum
    Replies: 13
    Last Post: 02-15-2014, 10:30 PM
  2. Lens Formula for Aerial Photo lens B&H 915mm F6.0
    By wideopeniris in forum ATM DIY Telescope Making Forum
    Replies: 17
    Last Post: 02-01-2014, 07:40 PM
  3. DLR in C5 prime focus: cannot get fully in-focus images
    By RePete in forum Astronomy Digital Cameras Forum
    Replies: 7
    Last Post: 03-06-2011, 09:47 AM
  4. why cant i focus without a biconvex lens between objective and eyepiece
    By fxmaster in forum ATM DIY Telescope Making Forum
    Replies: 5
    Last Post: 12-30-2010, 05:02 AM
  5. EQ and CG-5 manual
    By MrNightguy in forum Amateur Astronomy Forum
    Replies: 0
    Last Post: 01-04-2005, 08:35 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 02:13 PM.