Always we were amazed how easily amateurs would accept mediocre sharpness during observation of our nearest star, while they can be extremely critical if the telescope would not perform perfect on other stars. View Full Version here: My Baader film solar filters are well over seven years old, with no obvious problems So far I am not blind, but I am worried that there might be some cumulative effect for long term observation The Thousand Oaks film is totally devoid of any pin holes, and is actually thicker, I think, than the Baader film. Not to speak of the related treatments, annealing and dual side coating that the film undergoes until it has attained the desired properties.
I guess I’ll try holding it up to the Sun tomorrow and see what it looks like Now the pinhole myth: What’s more as the filter ages it will probably develop more. Yes if i remember correctly my film also had this i peeled it off,checked for pinholes hold the film up to a light bulb and then put together the filter as per the instructions. Finished my solar filter for tomorrow. Posted January 14,
Coatings are inspected constantly for consistency to ensure your eye safety! The pinholes are indeed very tiny except for one that is not very tiny, just tiny.
I will think about it as i am also paranoid about little holes and blindness. I haven’t found any in my film yet but I have been waiting for them sooar appear, it feels like such flimsy stuff.
This should enhance contrast in your image, and makes no discernable difference to resolution. When I finally got round to making a full aperture filter, the image quality improvement resolution was striking. Posted January 14, I read somewhere that if you touch it, then the residue left on your fingerprints can damage the film over time?
You need to solaf a member in order to leave a comment. View Full Version here: This means that only 0. So I tried to have a go at using the filter today, and after 20 minutes I somehow completely failed to get the scope pointed at the Sun!
Yes if i remember correctly my film also had this i solat it off,checked for pinholes hold the film up to a light bulb and then put together the filter as per the instructions. Rather than use a “texta” I would put a dob of white out on the hole, just to be sure!
Sign in with Twitter. I’ve used Baader solar film for a few years and haven’t had any pinholes – I just now checked it again after your post Steve.
By pritcJanuary 14, in Observing – Oinholes. They are not all over the whole sheet but in several relatively localised areas. Last time I used it,it was put away still perfect.
Sky At Night • Quick question about Baader solar film : Equipment Advice
I dono if that helps but its worth trying I suppose. I have read similar instructions my self. Obtain some thick opaque paint – tippex correcting fluid will do nicely, Hold the filter up to the sky so you can see the holes – or holding it against a computer screen might do in a dark room, Use the applicator to place a dab of tippex over each hole.
It’s not unusual for solar film to have very small holes in it. Share this post Link to post Share on other sites. I have removed the small center cap on my 80Gt’s main lens cap.
Phil – I agree with you. Dozens of miles of film were destroyed during tests to produce the tooling and process techniques to receive an absolutely uniform molecular structure for the substrate. My Baader film solar filters are well over seven years old, with no obvious problems No try in itif it’s brand newyou have a right to have it replaced or a full refund if it’s defective.
Thinking about the “seeing” in broad daylight was a new one for me! Posted January 27, Finished my solar filter for tomorrow.
All the filters i’ve seen have been covered in tiny dots. In fact, I used a IR-Cut filter to protect the camera sensor. I purchased a ready made astrosolar filter for my old Nexstar 4 from David Hinds and promptly returned it after observing pinholes while holding it to a bright light.
Does the solar film degrade over time? If it’s brand new, straight out the box, I would try to get a better replacement. The Thousand Oaks film is totally devoid of any pin holes, and is actually thicker, I think, than the Baader film.
I gave myself quite a shock once by almost looking through my scope before attaching the filter. I’ve still got enough trouble lining things up through a gaader without trying to do it by eye. I’ll wait for you all to stop laughing [: I keep them stored in Tupperware containers.