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General Astronomy >> General Observing and Astronomy

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Sandytoes1963
member


Reged: 11/24/12

Loc: SW Florida
Black fingers on my eyepiece
      #5641281 - 01/24/13 07:13 PM

While I was looking at the near full moon tonight I noticed only what I would describe as black fingers growing across my field of view. The longer I say there the longer they became. Any ideas?
When I loosened and rotated my eyepiece the black stayed in the same spot and reappeared when I switched eyepieces.


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norton67
member


Reged: 12/11/12

Loc: Michigan
Re: Black fingers on my eyepiece new [Re: Sandytoes1963]
      #5641289 - 01/24/13 07:17 PM

Where you looking through tree branches?

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Sandytoes1963
member


Reged: 11/24/12

Loc: SW Florida
Re: Black fingers on my eyepiece new [Re: norton67]
      #5641303 - 01/24/13 07:24 PM

No, I just turned my cooling fan on to see if that helps.

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Tim L
Carpal Tunnel
*****

Reged: 12/17/08

Loc: Missouri
Re: Black fingers on my eyepiece new [Re: Sandytoes1963]
      #5641313 - 01/24/13 07:32 PM

Are you using a reflector at low power? The moon's brightness can make your pupil constrict so that the secondary obstruction takes up a large portion of the light entering the eye. Back your eye away from the eyepiece and see if you can see the moon with a big black spot in the middle where your eye goes.

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Sandytoes1963
member


Reged: 11/24/12

Loc: SW Florida
Re: Black fingers on my eyepiece new [Re: Tim L]
      #5641326 - 01/24/13 07:39 PM

Okay I'm a idiot, you were right I was looking through some leafs that I didn't see in the dark.....Sorry ( :
Thanks for the help


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norton67
member


Reged: 12/11/12

Loc: Michigan
Re: Black fingers on my eyepiece new [Re: Sandytoes1963]
      #5641328 - 01/24/13 07:43 PM

I have done the samething.

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skinnyonce
super member
*****

Reged: 03/23/11

Loc: ohio
Re: Black fingers on my eyepiece new [Re: Sandytoes1963]
      #5641331 - 01/24/13 07:46 PM


Next time just shake the tree harder
Quote:

Okay I'm a idiot, you were right I was looking through some leafs that I didn't see in the dark.....Sorry ( :
Thanks for the help




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herrointment
Post Laureate
*****

Reged: 03/12/11

Loc: North of Hwy. 64
Re: Black fingers on my eyepiece new [Re: skinnyonce]
      #5641348 - 01/24/13 07:53 PM

Those issues baffle and frighten the best of us.

Repeatedly in my case.


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Tony Flanders
Postmaster
*****

Reged: 05/18/06

Loc: Cambridge, MA, USA
Re: Black fingers on my eyepiece new [Re: Sandytoes1963]
      #5641352 - 01/24/13 07:54 PM

Quote:

Okay I'm a idiot, you were right I was looking through some leafs that I didn't see in the dark.




Yeah, I thought it sounded familiar. I can't tell you how many times I've done that.

Some of the most amazing dark lanes in the Milky Way turned out to be trees ...


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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: Black fingers on my eyepiece new [Re: skinnyonce]
      #5643180 - 01/25/13 07:09 PM

Quote:


Next time just shake the tree harder
Quote:

Okay I'm a idiot, you were right I was looking through some leafs that I didn't see in the dark.....Sorry ( : Thanks for the help







I recommend moving the telescope out and away from being under any trees. All trees that I know of spit sap. It can speckle your mirror, and almost be unnoticed. If you get sap on your mirror, you should clean it immediately after your viewing session.


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Sandytoes1963
member


Reged: 11/24/12

Loc: SW Florida
Re: Black fingers on my eyepiece new [Re: GeneT]
      #5645096 - 01/26/13 08:39 PM

I had a excellent viewing tonight and did so even without that pesky tree. lol

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