Name: Baader Planetarium 140mm AstroSolar Telescope Filter
Brand: Baader Planetarium
SKU: AA2459313
Price: 120.00 USD
Availability: BackOrder
Rating: 4.86 (7 reviews)

Baader Planetarium 140mm AstroSolar Telescope Filter

Baader Planetarium ilter

Baader Planetarium

Order now, your card will not be charged until it is ready to ship.

On Backorder

Order now, your card will not be charged until it is ready to ship. Estimated to Ship: 09/2025.

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Adorama

Optics & Binoculars

Telescopes & Astronomy

Telescope Filters

Baader Planetarium Telescope Filters

Baader Planetarium ilter 

Explore the Baader Planetarium 140mm AstroSolar Telescope Filter for safe, high-magnification solar viewing.  Superior optical quality. Shop now!

Be captivated by the celestial wonders with the 140mm AstroSolar Telescope Filter, a high-quality product from the reputable Baader Planetarium. This innovative filter is designed to enhance your astronomical observation and imaging experience, providing a professional and secure solution for observing and imaging the Sun.The AstroSolar Telescope Filter is crafted with Baader AstroSolar Safety Film OD 5.0, a material renowned for its superior optical quality. Unlike many ready-made filters, this product does not stretch the filter material like a drumhead, which can compromise image quality. Instead, the AstroSolar film is mounted entirely stress-free, ensuring it performs like a high precision plane optical window. This durable filter features a clear white IR-rejecting front ring with reinforcing raised edges, designed to protect the solar filter material from contact with any sharp metal edge. The user-friendly design includes no-tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. The filter also comes with non-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index. Additional Phillips screws are integrated into the sliding fasteners, allowing the centering bolts to be firmly fastened with a screwdriver if preferred by the user.The AstroSolar Telescope Filter is designed with an index scale provided beside each adjustment slot, adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes. Black sliding washers are supplied to securely cover the full length of the adjustment slots in the aluminum frame, blocking sunlight from passing through the filter cell beside the filter area.For added safety, the filter includes three security straps to secure the position of the filter cell with Velcro-adhesive pads. This ensures a secure fit in front of the telescope under any circumstances, such as a gust of wind. The AstroSolar Telescope Filter is safe for solar observation and photography with all high-end telescopes and extreme tele-lenses, making it suitable for the highest magnifications and detailed observation of individual sunspots. With its temperature compensated cell, the AstroSolar filter material retains its excellent optical quality at any temperature, be it -30Deg C or +50Deg C.In conclusion, the 140mm AstroSolar Telescope Filter from Baader Planetarium is an efficient and user-friendly tool for all your astronomical observation and imaging needs. It's not just a filter, it's a gateway to the cosmos.

Very well made product that fits my Celestron 7" Maksutov perfectly.

Great item for both visual and photography of the sun through your telescope.

it fit my celestron 127slt like a glove. the sun  is white in this filter and it is neet to look at the sun spots and solar flares.  I wanted something quality so I didn’t hurt my eyes and this did the trick .

Good quality filter

Easy to use and very inexpensive, works fine.

Easy, inexpensive solar filer

I purchased this filter after reading many reviews. I used it for the Total Solar Eclipse a couple weeks ago. It was awesome. The filter provided great visual images. I didn't try any photography with it this time fort I'm still trying to figure that part out. I used the filter with my Celestron EVO 9.25 and am totally pleased with the performance of the filter. I would definitely recommend this filter to everyone interested in doing some solar viewing.

Bought for the 2017 Total Eclipse!!!!!!!

I got this filter to attach to my telescope for the 2017 solar eclipse. Optically it performed great and everyone had a good time looking at the sun slowly disappear, at the sunspots, and at the chromosphere for a few short seconds. In addition to being good optically, the filter itself seems to be well made. Where things falls flat though is the mount.

Other reviewers have stated that correct sizing is critical so before getting this I measured the tube diameter of my scope under the assumption that this was the necessary measurement. Apparently it is not. A 150mm filter is grossly oversized for a 149mm tube. The 150mm appears to refer to the size of the aperture though which the filter transmits light, while the mounting system is several centimeters larger in diameter. Baader Planetarium does have sizing guide, but it is hard to find.

Additionally, the mounting system uses glue-backed Velcro pads that you stick onto your telescope for safety. The idea is nice but the execution here also falls flat. The glue is not particularly well adhered to the Velcro pad and tends to pull off before the Velcro separates. Also, some might not like the idea of having Velcro pads glued onto their scopes, binoculars, or (especially!) telephoto lenses.

Works great, but beware the size and Velcro

This was a last minute purchase and I was not sure if it would even fit. Thankfully it fit onto the lens hood of the lens.

Works great on Sigma 120-300mm zoom lens

The filter assembly is well made and high quality. It fits the lens perfectly, but just. The only way to attach this particular filter is to install it on the lens hood. It has three rubberized posts that are slightly adjustable to accommodate different dimensions, but the range of adjustment is quite small (approximately 3mm per post). I set my posts set as far inward as possible and in this position it is possible to insert them carefully into the lens hood and force them down until the rim of the filter frame is against the lens hood. There are also three Velcro straps to secure the filter from accidentally coming off. I have taken several sets of trial images and have not noticed any light leakage or occlusion of the sun's disc. I would recommend that anyone considering this filter check the specs carefully to get the correct size for proper fitment. This particular filter would not attach properly to a tulip style lens hood.

Baader Planetarium 140mm AstroSolar Telescope Filter

Key Features

Protect your gear with Adorama Protect.* Learn more

Baader Planetarium 140mm AstroSolar Telescope Filter

Save 5% Every Day†

Key Features

Protect your gear with Adorama Protect.* Learn more

Save 5% Every Day^†