Mike, do you have a solar filter for one of your scopes? One not too much bigger that the lens barrel or lens hood. Wrap a length of double sided velcro around the lens multiple times until you get the right diameter for the filter. The velcro gives a firm but not too tight hold.
It works for me with the filter for my ST80 on the barrel of my Sigma 150-500.
If you've got some spare lens caps lying around this might be the go Mike - piece of Baader film taped to the inside of a lens cap (ignore the round metal ring I've got glued in - that's threaded for a Star Analyser grating & other 1.25" screw-in filters). Depending on the size hole you cut in the cap, you'd have to vary your planned exposure times. Anyway, a very simple & effective camera lens filter with quick, clean change at totality.
Do you have a Cokin/Lee or similar ND filter holder? If so it should be fairly easy to whip something up on a piece of card to fit in the holder. Thats what i am doing.
whos looking for a filter......I made one up for a canon 58mm thread if some one wants to borrow it as i got one from the astro shop ...... I live in Kewarra beach about 5-10 min drive from Palm cove the filter works ok but give a whitish image instead of orange as it is Solar paper
Depends what size your lens is I guess but for the venus transit I used a pringles container.
It's really simple if not a bit rough but it slipped over the lens no problem and can be taped into place.
Just cut the pringles tube to size and then take the lid and cut a circle out of the lid and the plastic ring that's left works great at securing the solar film in place.
The ED80 solar filter fits great on the 120-400mm Sigma with a bit of double-sided velcro around the lens hood to pad it out a bit. That lens will go on the Canon 40D for up-close and corona shots.
And I made a solar filter cell for the smaller lenses - fits over the top nicely.
That'll be on the 5D Mk 2 for widefield sequence and/or timelapse shots.
classic - just wait till you see mine LOL. its a custom design to suit a bog standard canon lens - engineered to take into account the focus extension and the zoom. it look hideous but it works. unfortunately it is now packed into the bag - should have taken an image of it. you have done well mike
i cheated.. i bought a thousand oaks optical solar filter
i tried making my own for Trans of venus, and i failed due to high wind! but i did get my pics i wanted... so after that attempt i am going back to the pro filter... so bought myself one for my 400mm lens..
Solar filter for camera lenses
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