Page 1 of 2 12 LastLast
Results 1 to 10 of 13
Like Tree10Likes

Thread: New Dob with strange mark on the secondary

  1. #1
    Bugrist's Avatar
    Bugrist is offline White Dwarf
    Points: 280, Level: 5
    Level completed: 60%, Points required for next Level: 20
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Aug 2017
    Location
    Switzerland
    Posts
    5
    Points
    280
    Level
    5
    Thanks
    1
    Thanked 0x 0 Posts
    Downloads
    0
    Uploads
    0

    Default New Dob with strange mark on the secondary



    Hello and glad to be a sky explorer. It's not new to me but first time buying a telescope!

    I've received my 12" Skywatcher Dob collapsible.
    Can someone tell me is this scratch on the secondary mirror normal like the official Skywatcher distributor is telling me, for adjusting the telescope?
    Sounds strange to me.
    I hope it doesn't affect the image and have peace of mind...
    Thank you and greetings from Switzerland.
    Attached Images Attached Images

  2. #2
    Gabby76's Avatar
    Gabby76 is offline Super Moderator
    Points: 55,521, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.7%
    Achievements:
    2 Posts Achievement20 Posts Achievement!Gallery Achievement!Album Achievement!50 Posts Achievement!
    Awards:
    Hyperactive Geek - Silver 2rst place for Activity!
    Join Date
    Jan 2016
    Location
    Live: Slovakia Work: Canada
    Posts
    12,769
    Points
    55,521
    Level
    100
    Thanks
    2,404
    Thanked 4,037x 3,423 Posts
    Blog Entries
    3
    Downloads
    3
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    I cannot really see it due to the size of the screen I am looking at but if it is the mark in the center of the secondary you probably will not see it when viewing.
    Have you tried viewing with the scope yet?

    Welcome to the forums, enjoy the scope
    Refractors: Antares 105 f/15, Bresser 102 f/13.2, Celestron 102 f/6.5, 2-150 f/8, Stellarvue 80 f/6.9, TS 102 f/11, Vixen 115 f/7.7
    Mounts: Manfrotto 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

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

    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)

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

  3. #3
    goldstar's Avatar
    goldstar is offline Bronze Supporter
    Points: 5,230, Level: 49
    Level completed: 40%, Points required for next Level: 120
    Overall activity: 13.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2016
    Location
    plattsburgh
    Posts
    630
    Points
    5,230
    Level
    49
    Thanks
    1
    Thanked 162x 127 Posts
    Downloads
    0
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    Not normal Bugrist!
    The distributor might be confused thinking you are talking of the collimating circle that is probably in the center of the primary mirror.
    It should not noticeably affect the image but a new scope certainly should not have this sort of defect.
    It's up to you if you want to return it.
    And most importantly WELCOME TO THIS FORUM!
    Which canton are you from?
    upfyrman likes this.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
    CR 6 150 mm f8 refractor . AVX mount. 80mm guide scope with Nexguide. Canon EOS rebel 3 Ti DSLR. Canon Rebel XS DIY modified. I- Optron skytracker. Sky Watcher 8 inch collapsible Dob. 30 mm, 25 mm ,20 mm, 15 mm, 10 mm ,8.8 mm EPS plus plus plus. Cometron 12 x 70 binos plus a couple of 6X42 birders. Sky Watcher PRO ED 80 mm. UHC/LPR, OIII, UV/IR cut filters . Flip mirror. 5 mW green Laser pointer. Telrad donated to Rick18704-Lots of hope. Lousy skies.

  4. #4
    KT4HX's Avatar
    KT4HX is offline HYPER GIANT
    Points: 80,616, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 53.0%
    Achievements:
    365 Days+ Registered Achievement!First 1000 Experience Points750 Days+ Registered Achievement!1000 Days+ Registered Achievement!200+ Posts Achievement!
    Join Date
    Dec 2008
    Location
    Virginia
    Posts
    10,390
    Points
    80,616
    Level
    100
    Thanks
    845
    Thanked 6,888x 3,848 Posts
    Blog Entries
    177
    Downloads
    2
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    That will absolutely not impact the views. Some people will center mark their secondaries for collimation purposes by making a very small dot using a black marker. That doesn't show up during observing either. So enjoy the scope with no worries.
    Alan || My DSO Blog:
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

    ---------------------------------------------------------------------------
    Astro Sky 17.5 f/4.5 Dob || Apertura AD12 f/5 Dob || Zhumell Z10 f/4.9 Dob
    ES AR127 f/6.5 and ES ED80 f/6 on Twilight-II Mount
    ES 82° 24mm thru 4.7mm
    ---------------------------------------------------------------------------
    Astronomers: We look into the past to see our future.

  5. The Following User Says Thank You to KT4HX For This Useful Post:

    Bugrist (10-13-2017)

  6. #5
    kanadalainen's Avatar
    kanadalainen is offline SUPER GIANT
    Points: 16,237, Level: 87
    Level completed: 97%, Points required for next Level: 13
    Overall activity: 44.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Feb 2017
    Location
    Winnipeg, Canada
    Posts
    1,422
    Points
    16,237
    Level
    87
    Thanks
    1,411
    Thanked 1,346x 540 Posts
    Blog Entries
    1
    Downloads
    6
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    Welcome to the forums! As Alan mentioned, you are likely good to go.
    Ian
    Scopes Orion XT10i f4.7, old Sears 6305 60mm f15
    Binoculars Asahi Pentax 7x35 and 7x50, Beck Kassel 8x30 and Celestron 15x70
    Eyepieces Leitz Periplan GF, ES68s, ES82s, TV Naglers, Antares, Meade 4000 super plossl, Nikon CFI, Paracorr I
    Messier count: 86

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

  7. #6
    UlteriorModem's Avatar
    UlteriorModem is offline Gold Supporter
    Points: 64,228, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.8%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Awards:
    Most Threads Award
    Join Date
    Oct 2015
    Location
    Tallahasse Florida
    Posts
    13,964
    Points
    64,228
    Level
    100
    Thanks
    1,461
    Thanked 3,384x 2,893 Posts
    Blog Entries
    4
    Downloads
    0
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    Yea its some minor scratches / pits in the secondary. You will never see them.
    upfyrman likes this.
    Scopes: Orion 130mm APO Triplet, Orion 8" f4 astrograph, 10" RC Mount: Celestron CGX-L Guiding: Orion 60mm f4 scope, Starlight Loadstar, PHD2 software - Cams: Planetary: ASI120mc, DSO:Atik 383L+, SGPsoftware Processing : Regisax, Deep Sky Stacker, Star Tools, Pixinsight Assistant: One very large cat
    ~ Put your money where your mount is ~


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

  8. #7
    Bugrist's Avatar
    Bugrist is offline White Dwarf
    Points: 280, Level: 5
    Level completed: 60%, Points required for next Level: 20
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Aug 2017
    Location
    Switzerland
    Posts
    5
    Points
    280
    Level
    5
    Thanks
    1
    Thanked 0x 0 Posts
    Downloads
    0
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    OMG you are so nice.
    I am very pleased and relieved. I have 120 stairs steps from the house to the road.
    Goldstar, I am in canton Ticino. Fairly good skies, much luckier here than in the north although nothing like Arizona or the likes.
    Would be nice to see central USA, but my dream would be seeing the southern sky once!

    I think I will save myself the hassle to have the scope replaced, and even getting a new mirror maybe it wouldn't be easy to mount it myself right?

    I've quickly learned to maneuver my other Orion XT8 Dob a month ago and quickly understood that to seriously see you need a bit more.
    More than 10 years ago among three friends we were partying sometimes with a heavy Meade, with music and green substances, in Epic Mode.
    Today in the 40ties the passion (and some freetime) returned.

    Have not had a good seeing these days and was exausted from long studying many days about which scope to buy etc, but a brief observation of Andromeda with the 12" was awesome.
    Looking forward to go far, probably this weekend with the old friends again after such a long time!
    upfyrman and OleCuss like this.

  9. #8
    Bugrist's Avatar
    Bugrist is offline White Dwarf
    Points: 280, Level: 5
    Level completed: 60%, Points required for next Level: 20
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Aug 2017
    Location
    Switzerland
    Posts
    5
    Points
    280
    Level
    5
    Thanks
    1
    Thanked 0x 0 Posts
    Downloads
    0
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    One more photo to submit to you expert guys...not sure anymore to keep it and wondering if a DIY replacement would be easy if the dealer will offer a mirror.
    Attached Images Attached Images

  10. #9
    bladekeeper's Avatar
    bladekeeper is offline Super Moderator
    Points: 220,154, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.9%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Awards:
    Activity Award
    Join Date
    Aug 2014
    Location
    Lowell, Arkansas, USA
    Posts
    31,592
    Points
    220,154
    Level
    100
    Thanks
    22,869
    Thanked 13,997x 9,596 Posts
    Downloads
    8
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    Like the others have said, probably won’t be noticeable while observing, but, it’s a new scope, and that’s not something you really should have to “put up with” with a new scope. I’d call the dealer and see what they can do to make it right.

    A new car with scratches on the hood...
    upfyrman and ProfEclipse like this.
    Bryan
    Scopes: Apertura AD12 f/5; ES AR127 f/6.4; ES AR127 f/9.4; ES AR102 f/9.8; iOptron MC90 f/13.3; Orion ST80A f/5; Celestron Premium 80 f/11.4; Celestron C80 f/11.4; Meade NG60 f/10; Charmin TP40 f/2.2
    Mounts: Bresser EXOS-2; ES Twilight I; ES Twilight II; iOptron Cube-G; AZ3/wood tripod; Vixen/Celestron Polaris
    Eyepieces:
    GSO Super Plössl 40mm, 32mm, 9mm; ES 82° Series; GSO Superview 30mm; Celestron Plössl 26mm; ES 70° 25mm; ES Plössl 25mm; Vite Aspheric 23mm, 10mm, 4mm; Orion Expanse 20mm, 9mm; KK Ortho 18mm; Bresser 70° 15mm; BCO 10mm; ES 62° 9mm; Zhumell Z Series 5mm
    Binoculars: Pentax PCF WP II 10×50, Bresser Corvette 10×50, Bresser Hunter 16×50 and 8×40, Garrett Gemini 12×60 LW, Gordon 10×50
    Observing: Herschel Tallies: H1 = 400/400 H2 =310/400 H3 = 212/300; 2,902 observations of 1,762 objects; Led Zeppelin

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
    Days since last observing session: 18; Sessions in last 30 days: 1; Last night's excuse: Windy, and very soggy.

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

  11. #10
    bobharmony's Avatar
    bobharmony is offline HYPER GIANT
    Points: 29,804, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 6.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!Blogger Achievement!
    Join Date
    Dec 2015
    Location
    Connecticut USA
    Posts
    5,505
    Points
    29,804
    Level
    100
    Thanks
    1,197
    Thanked 2,007x 1,929 Posts
    Blog Entries
    15
    Downloads
    0
    Uploads
    0

    Default Re: New Dob with strange mark on the secondary

    I agree with Bryan - the dealer should make you whole, and take the risk involved in swapping out the part. You shouldn't be on the hook because you dropped a screwdriver on the primary while replacing the scratched secondary.

    On the other hand, you won't notice it in use, so it is up to you whether you are satisfied or not. Enjoy the scope - and welcome!

    Bob
    ProfEclipse likes this.
    Hardware: Celestron C6-N w/ Advanced GTmount, Orion ST-80, Canon 60D (unmodded), Orion SSAG
    Software: BYE, PHD2, DSS, PhotoShop CC 2017, StarTools, Cartes du Ciel, AstroTortilla
    visit my Astrophotography blog:
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
    src="http://clearoutside.com/forecast_image_small/41.70/-72.67/forecast.png" border="0" alt="" />

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

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. Mark the calenders
    By RazShadow in forum Astronomy Forum
    Replies: 13
    Last Post: 07-18-2013, 11:35 PM
  2. Strange Viewing Image Problem White Background with Secondary Spider
    By DOB2011 in forum Astronomy Beginners Forum
    Replies: 6
    Last Post: 12-31-2011, 10:39 AM
  3. Baader zoom 8-24mm Mark 2 versus Mark 3
    By ynnek4 in forum Telescope Eyepieces Forum
    Replies: 4
    Last Post: 09-07-2011, 10:12 PM
  4. reflection of secondary mirror and secondary mirror holder
    By brucegooglegroups in forum Amateur Astronomy Forum
    Replies: 4
    Last Post: 06-13-2008, 02:33 PM
  5. HST Mark II?
    By Dave Mitsky in forum Amateur Astronomy Forum
    Replies: 25
    Last Post: 02-04-2005, 03:53 PM

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 09:38 AM.