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seven_legs

Mercury transit in May

35 posts in this topic

(Only said in fun!)

I do realise the importance of putting those glasses on any optics! :blush:

 

Ron

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Nope, should be fine at that. You will need that polarising filter though, with the ED80 it's still pretty darned bright but safe

 Thanks Mike. If the image is bright in your ED80 will be to bright if using a ST120?

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I would say bright but not too bright for safety. With a polarising filter you will be fine. It will just be brighter than you might like without. The Herschel wedges are safe upto about 6 inch scopes. If you are concerned leave the big cap on and use the smaller aperture.

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On 17 April 2016 at 13:28, seven_legs said:

 Thanks Mike. If the image is bright in your ED80 will be to bright if using a ST120?

 

I use a HW with my WO FLT132 refractor Tony.

No concerns with heat build up etc. The wedge gets a little warm, but nothing more.

The view is a little bright with 'just' the ND 3.0 filter. I usually add one of the others (0.9 ND?)  to dim it a bit more if required.

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Thanks rob. I may well pull the trigger and order when I get paid next Tuesday 

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Another Herschel Wedge user, I use it with the Skywatcher 120ED Esprit and it's a wonderful combination.

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Cheers Mick.  You never know I might dirty myself and get a CCD to take photos....only joking ...I think, lol

if I get a wedge will do a little report on it

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