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Celestron C6 Flaring Diamond ring

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#1 Abhat

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Posted 16 March 2016 - 09:25 AM

While using my recently bought C6 for the first time last night I noticed this flaring on Jupiter only at very low powers. I saw several threads on this topic. It seems the solution is to flock the primary baffle tube. I need to some tips on doing that. I am looking for a no adhesive solution as I am a clumsy person.

 

  • Do I flock the entire length of the baffle or just the end near the corrector or the end near the diagonal?
  • Which paper of the following would work the best when rolled up and shoved in. Hobby Felt paper, Sand Paper painted with flat black or Protostar flocking material.

 



#2 areyoukiddingme

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Posted 16 March 2016 - 02:50 PM

Flocking the whole length of the baffle tube is going to be difficult if you use sandpaper, at least in my experience as a fellow clumsy. I found that it was very difficult to get the ends flush without a corner popping up and protruding into the light path (which becomes evident under a defocused star).

 

I gave up on the sandpaper, and will get around to getting some flocking paper.

 

One other note is that if you don't get it right the first time with the sandpaper, you will have to yank the thing back out, and doing so will add some additional shine to the baffle. Be meticulous and try to get it right the first time.



#3 doug mc

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Posted 16 March 2016 - 07:29 PM

Flocking paper. You only need to expose the ends of the roll of the sticky backing. This will hold the flocking in place. I used a piece of timber dowling with a rubber O ring to press the ends down in the baffle tube. To observe what needs flocking just point your scope out side to the sky ( not the sun) remove the eyepiece from your diagonal look inside and you will see what needs flocking. Sometimes the diagonal has bright surfaces as well.

#4 Abhat

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Posted 16 March 2016 - 08:11 PM

I had a 600 grit sand paper piece lying around. Its one side is plain and other side was rough. I painted that side with a chalkboard paint. I made a 3" long roll and inserted it in the baffle tube. That made immediate difference. See the pictures below. 

 

In the night I was still seeing a faint diamond ring on Sirius. After pushing the roll back and forth I came to conclusion that closer it was to the corrector end better was the flare control. I  pushed it in as far as my finger could and miraculously the flare was gone. 

 

Before the sand paper roll.

IMG_0921.JPG

After the sand paper roll.

IMG_0920.JPG

 

I will order a flocking paper from Protostar and flock the entire length of the tube.



#5 spongebob@55

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Posted 17 March 2016 - 01:59 PM

Thanks Abhat.......a picture is worth a  1000 words! :waytogo:



#6 orion61

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Posted 18 March 2016 - 01:33 PM

I don't know if it was only some or all, but there was a screw that stuck out into the light path slightly on mine that could cause it.




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