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BP-1212 - Silver-Black Polymer Solar Filter Film Sheet (12" x 12") - 1 ea

Brand: Thousand Oaks Optical

881 ratings

| 133 answered questions

Amazon's Choice in Telescope Filters by Thousand Oaks Optical

$26.99

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Size: 12 Inches

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Brand	Thousand Oaks Optical
Material	polymer
Coating Description	Multi Coating
Photo Filter Effect Type	Enhancing

About this item

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Dimensions: 12" X 12"
Make your own solar filter for camera, telescope, finder, binocular or handheld eclipse viewer
(Size shown in pictures is 8.5" X 11"); Solar image is yellow-orange; Made in USA
Black polymer is the most common filtering material for observing sunspots and granulation through telescopes and binoculars; Consistent yellow-orange solar image, even density with any aperture, and flat surface compared to other thin film filters that have wrinkles and creases; (Sheet is shipped in between cardboard and does not include a storage case)
REMEMBER, DO NOT VIEW THE SUN THROUGH AN UNPROTECTED FINDER SCOPE. MAKE SURE TO DETACH OR COVER YOUR FINDER SCOPE IF IT IS UNPROTECTED!

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Safety Information

See Enclosed Instructions.

Compare with similar items

		SolarLite Filter for Telescope, fits ETX90, C-90, Questar 3.5, Wm. Optics ZS80II ED, Orion OBS. 70 & Astroview 90, Orion Explorer 90	SolarLite Filter for Telescope, fits C-80, Meade DS-70, Orion 80, Vixen 80	Astromania Deluxe Filter 100mm Adjustable Metal Cap for Telescope Tubes with Outer Diameter from 70mm to 92mm Aperture 75mm	SolarLite Filter for Telescope, fits C-60, Meade DS-60 EC, Orion 70, Tak. FS-60

Customer Rating	(881)	(28)	(3)	(43)	(2)
Price	$26.99	$69.00	$59.00	$34.99	$59.00
Sold By	Israeli First Aid & Shyh	Israeli First Aid & Shyh	Israeli First Aid & Shyh	Astromania Optics	Israeli First Aid & Shyh
Brand Name	Thousand Oaks Optical	Thousand Oaks Optical	Thousand Oaks Optical	Astromania	Thousand Oaks Optical
Coating Description	Multi Coating	—	No Coating	—	—
Material	polymer	Glass	Glass	Aluminum, Plastic	Glass
Photo Filter Effect Type	Enhancing	Enhancing	Enhancing	Ultraviolet	Enhancing

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Product Description

Black Polymer sheets are commonly used to make home-made solar filters. Can be used for naked eye observation of the sun, telescopes, finders, and binoculars. - We only sell Thousand Oaks Optical (TOO) solar filters, the leading manufacturer that has been making safe solar filters for 35 years. - Safely view the sun anytime, including during all phases of an eclipse with TOO solar filter sheets, lens filters, glasses, or viewers. TOO's exclusive high quality substrates provide superior safety features, sharper solar images, and a pleasing orange solar image. All products meet CE requirements. Only TOO has CE and ISO certification. Safe for unlimited visual and photographic use. Transmission: 1/1,000th of 1% (Optical Density 5). - TOO products were exclusively chosen by NASA for use aboard the Space Shuttles. Other professional users include: ABC, BBC CBS, NBC, CNN, NOVA, The Discovery Channel, National Geographic, and most major universities and observatories throughout the world. TOO uses the latest technology for manufacturing and developing new products. Tens of thousands of their solar filters and millions of their solar eclipse viewers are used world wide.

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Product information

Package Dimensions

12 x 12 x 0.01 inches

Item Weight

7.1 ounces

ASIN

B00DS7SSEW

Item model number

BP-12

Customer Reviews

881 ratings

4.7 out of 5 stars

Best Sellers Rank

#9 in Telescope Filters

Is Discontinued By Manufacturer

Date First Available

July 4, 2013

Manufacturer

Thousand Oaks Optical

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer reviews

5 star		79%
4 star		14%
3 star		3%
2 star		1%
1 star		3%

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Max B.

Got what I wanted :)!

Reviewed in the United States 🇺🇸 on November 14, 2022

Size: 6 InchesVerified Purchase

Not much to say. Came wel packaged and didn’t leave me blinded by the sun.

Helpful

IndyTim

Complete Totality

Reviewed in the United States 🇺🇸 on August 31, 2017

Size: 12 InchesVerified Purchase

It's the real deal, made in the USA. This stuff was more valuable than gold in the days before the GAE and everybody wanted it.

I tested it against various high-brightness sources such as high intensity 5W LED flashlights, and a 100mW 395nm UV laser. You could see the LED die structure in great detail with the minimal amount of light that would pass. This filter material would be perfect for inspecting LED die structures or as a means of taking low intensity measurements for quality control. The UV laser would not pass through the filter at near 100%. Only the occasional photon or two would pass when moving the laser at different angles, due to what I think is scattering. I tested some of the recalled solar viewing glasses from China and found that there was varying degrees of UV light passage in about 30% of my sample. Please, folks, don't do this kind of testing with your eyes and instead use a camera as a sensor.

I made various camera filters out of the filter film by carefully tracing the glass element of a disassembled UV filter and then reassembling the filter with the film behind the glass. Even my besting cutting skills weren't enough to prevent imperfection around the edges, and that is why I put it on the backside. The compression of the glass ensured the filter film was against the back inside edge of the black anodized aluminum UV filter assembly and prevented any light bleed. Ideally, laser cutting these would be better.

For personal viewing with my 20-100 x 70mm monster binoculars, I crafted two identical cardboard tube rings around the outside edge of the objective lenses with a few wraps of coiled 2" wide card stock cut from cereal boxes and then a few wraps of tape to hold them together. I then put strong double-sided tape around the outside of the tube rings. The filter film was cut into 3/4" oversized circles using appropriately sized round plastic food containers as a template. I then set the binoculars upright with these card stock ring sleeves and centered them over the pre-cut circular filter films. With everything aligned and pressed against the filter film and a cutting surface, I cut outward radial slits into the film "over-sized area" around the peripheral of the card stock rings at 1/2" intervals. This allows one to fold these "flaps" of film onto the sides of the tubes and double sided tape, to tape everything together. A few more layers of silvered Mylar tape were wrapped around these flaps to seal everything up.

Complete totality was observed from Franklin, MO, which is on the center line of totality for the GAE and provided us 2m 39s of viewing. The local weather conditions were slightly hazy, and so we were able to make out detail on the surface of the moon due to the slight dimming of the Corona. It was the most amazing astronomical convergence I've ever seen. If you missed it, you really missed it.

3 people found this helpful

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Mickey Loeb

Thickness

Reviewed in the United States 🇺🇸 on December 22, 2022

Size: 12 InchesVerified Purchase

Description did not contain thickness of the material

Helpful

Hmm

Why would a hole melt in this?

Reviewed in the United States 🇺🇸 on January 15, 2022

Size: 12 InchesVerified Purchase

The second time I used this - there was a hole melted in the film - I have a 10" dob. I do a Cheshire and laser culmination before every session. I aim the telescope simply by looking at the shadow cast on the ground, then peer through a 40mm from a distance of 2-3 ft. If all safe then I will (with caution) proceed with my viewing session. In this case I kept seeing a glint of sunlight while doing the final aiming (again not looking through eyepiece directly) it's then I noticed a 2mm hole towards the edge - the film appears to be heat stressed in 3 areas - it mounts only one way on the scope - I live in S.Florida - but that shouldn't make any difference. Any ideas from the community what's going on here. I don't have much faith in this solar filter now. I'm not faulting the film - it works great. A hole appearing during a viewing session would be disastrous. I believe it's something on my end causing this.
The sweet spot is not dead center in the primary mirror - can this be the cause? Any idea folks?

Helpful

SPLWF

Best Inexpensive Solar Filter

Reviewed in the United States 🇺🇸 on July 19, 2022

Size: 12 InchesVerified Purchase

Purchased a 12 x12 for my Orion Skyline 10", works amazing and didn't cost much to make it fit onto my OTA.

Purchased these two:

https://www.amazon.com/dp/B08Z1XX57J?psc=1&ref=ppx_yo2ov_dt_b_product_details
https://www.amazon.com/dp/B01LDT7UHM?psc=1&ref=ppx_yo2ov_dt_b_product_details

and used some bolts and nuts I had lying around. I put OTA completely horizontal (who looks at sun at the horizon unless you're at a beach), nothing fell.

One person found this helpful

Helpful

J. Michail

Order a size larger than your telescope's aperture, but this is a great filter film.

Reviewed in the United States 🇺🇸 on September 18, 2015

Verified Purchase

I ordered one size too small, but I can work around it. Otherwise I am quite pleased with this product. I have tested the film and it does filter the sun properly so that viewing the sun can be done safely. About the only thing that can be seen through this filter is the sun itself, and you can see the sunspots, eclipses, etc. This solar optical filter arrived in good condition and on time.

My advice is if you order this film you will need to make a mount for it to attach it to your telescope. Many people apparently tape it to the telescope, but I plan to make a mounting with screws to hold it on, and with Plexiglas lenses to protect the film from damage. By making a more permanent mounting my plan is to be able to use the solar optical filter over and over again whenever I need it. The design I've come up with has the film sandwiched between the two plate discs of the Plexiglas, which will be attached to the mounting by screws through the Plexiglas into the mounting. The mounting itself will slip over the outside of the telescope and will be secured with set screws. I'm a woodworker and my neighbor is a machinist, so I'm debating on whether I will make the mounting using wood or have my neighbor mill an aluminum one.

Important notes:
1. This solar optical filter film is intended to be used over the aperture (largest opening) on the telescope. Do not use it to make an eyepiece or in the eyepiece part of the telescope.

2. It is best to order a size larger than the aperture of your telescope. The film is square, not round. My telescope aperture is 6" and the film I ordered was 6" by 6". I should have ordered the 8" by 8" or even the 10" by 10". The 6x6 leaves small gaps where it doesn't cover the opening. To solve this problem the mounting I'm making will have some material sitting inside the aperture.

11 people found this helpful

Helpful

Amrit P

great value

Reviewed in the United States 🇺🇸 on September 23, 2021

Size: 6 InchesVerified Purchase

used it to get attached.. gret value to figure out hwo much i enjoyed solar photography. ofcourse it's a white lite rejection filter so you'll get to see some sunspot action but don't expact the same result as that from those fancy quark filters. this gives me something interesting to do in the day time. for using with my lens, i simply carefully cut it and placed in as shown between a cheap filter kit i had that i no longer use. easier to thread on and off this way stays securely on. but there are other good examples on youtube of building your own too.

Helpful

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Dimitrios K

Not many reasons to pick it over a Baader, especially if you have a small scope or want photography.

Reviewed in the United Kingdom 🇬🇧 on September 10, 2016

Size: 12 InchesVerified Purchase

It is much darker and shows less clear details than the Baader Astrosolar film. In general, I would say outright avoid it for apertures under 4". For larger telescopes if you don't try to zoom on details (e.g. viewing the full disk), it will look crisp and some people actually like the orange color of the sun (because we commonly associate the sun with the color of the sunset) - when, in fact, the sun is white (the Baader filter is accurate in that respect). However, high power views even in large telescopes won't show the same detail as the similarly priced Baader Astrosolar film and photography in particular suffers considerably. Sunspots are much less well defined, you can't really see granulation etc. Also you can't use some interesting blue/green filters (like the Continuum) that can better show some features, as the Thousand Oaks filter blocks most of the blue/green light. I did see some improvement in photography when using a CLS filter with it, so do try that if you have one.

I am attaching one image to show the comparison of color & brightness (note ISO and exposure) between this filter and the Baader film. I am attaching an additional one through a 2x barlow and a CLS filter that is a stack of a few hundred frames of a Canon 550D video crop mode movie to show the difference in detail of the Thousand Oaks and the Baader after full processing and sharpening (and both color adjusted to a pleasant yellow). All images were taken with a Skywatcher Evostar 80ED Pro.

PS. You might notice that one side is more shiny. Most people have that side facing the sun to reflect more heat, but there are no actual instructions about it from the manufacturer so don't worry if you installed it the other way, it seems to function the same both ways.

2 people found this helpful

jtlenaghan

Works great

Reviewed in the United Kingdom 🇬🇧 on October 5, 2016

Size: 12 InchesVerified Purchase

Had a 6 inch telescope to cover up for solar work. Cut a quarter out and mounted in a cardboard frame to fit the end of the Newtonian. Works great.

Alro

Parfait en bricolant un peu

Reviewed in France 🇫🇷 on February 26, 2020

Size: 10 InchesVerified Purchase

Ne trouvant pas de filtre solaire adapté à mon télescope de 150 ou beaucoup trop cher, j'en ai fabriqué un avec une cornière de 25 mm en aluminium que j'ai cintré par allongement et une couronne en plexiglas adaptée au ø extérieur de la cornière, puis collé le papier filtre solaire, intercalé par une couronne en tissu velours, sur la cornière et fixé par rivets extensibles la couronne en plexiglas après peinture.
J'ai fait de même pour le chercheur mais à partir d'un bouchon pour tuyau PVC ø 35 mm.
Cout de l'opération 30 € papier filtre inclus.

2 people found this helpful

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h30MTL

Other than that it's a fine product.

Reviewed in Canada 🇨🇦 on July 8, 2018

Size: 6 InchesVerified Purchase

Shipped from Israel, wouldn't have bought it if I knew I'm boycotting this country because of what they do Gaza. Other than that it's a fine product.

One person found this helpful

Antarès

Performant!

Reviewed in France 🇫🇷 on November 21, 2019

Size: 6 InchesVerified Purchase

La filtration est excellente et reproduit le soleil dans sa couleur (jaune) J'ai bricolé un filtre et la feuille filtrante est emprisonnée entre deux minces feuilles de plexiglass ce qui la met à l'abri d'un éventuel choc, (bien qu'elle semble résistante) Donc ravi de cet achat !

One person found this helpful

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