FREE SHIPPING

On Hundreds of Products details ›

CALL US TOLL FREE 800-266-9590

Spectrum Full Aperture Glass Solar Filter for 283 mm - 289 mm OD Telescopes - ST1150G

SKU: SPR-ST1150G

Regularly stocked item that is on order with the manufacturer and on its way to our warehouse. Expected to arrive within 5-10 business days.

One of the many benefits to becoming a customer of High Point Scientific is that you receive Unlimited Tech Support on all of the products you purchase from us.  We understand that many of our products are technical in nature and require support.  Rest assured that our team of Telescope and Telescope Accessory experts will be standing by (800.266.9590) to support you for as long as you own one of our products!  

Our price: $152.00
Bread Checkout
 
To ensure that the solar filter you buy will fit properly, please take a few moments and measure the outside diameter of your telescope, spotting scope or binoculars before you order. Remember, the solar filter needs to fit snugly around the front of the tube assembly that holds the optics. If the filter is slightly larger than its diameter, the filter can be made to fit by the addition of self-stick felt spacers to the inside of the cell. However, if the filter is too small it will not fit, and that would be a shame. So please, measure before you order. Thanks.



Spectrum Full Aperture Glass Solar Filter for 283 - 289 mm OD Scopes




This Spectrum Full Aperture Glass Solar Filter fits the following instruments:



  • Celestron 10" Newtonian
  • Orion 10" SkyWatcher




The ST1150G Full Aperture Glass Solar Filter with 293 mm inside diameter provides a safe way to directly view the sun. It allows the maximum amount of light possible to pass through to your telescope, using the entire aperture of your optical tube to enable the finest daylight viewing quality with limited atmospheric instability. When instability does occur, a mask can be placed over the filter for sufficient aperture reduction.



When directly viewed using this durable premium solar filter, the sun will appear in an organic yellowish-orange state. This filter contains felt padding and a centered aluminum cell that attach to the end of the telescope with nylon thumb screws. The ST1150G Solar Filter is made with hand-selected glass of superb quality with reflective coatings that are meticulously inspected.



This filter comes in foam-lined box with plastic wrapping to avoid any possible impairments while shipping. The box also provides a convenient method for storing the filter between uses. Full instructions on how to properly use and maintain your filter are included.



Spectrum ST1150G Full Aperture Glass Solar Filter Specifications




  • Inside Diameter: 11.5" (293 mm)
  • Clear Aperture Diameter: 9.5" (241 mm)
  • Fits instruments with an outside diameter range of 11.125" - 11.375" (283 mm - 289 mm)




In order to assure a proper fit, please be sure to measure the outside diameter of your telescope before committing to purchase a specific solar filter as telescope specifications may be modified with subsequent versions due to re-designs, etc.

What About Your Finderscope?



Adding this solar filter to your telescope will adequately filter the light coming through your focuser, but have you considered what you’ll do about your finder scope?



Here are some suggestions for dealing with your finder that will assure you do not damage your eyes (or anyone else’s) by looking at the Sun through your telescope’s unfiltered finder:



  • Remove Your Finder. Ditching your finderscope when solar viewing will remove the possibility of someone accidentally looking through it to spot the Sun. Of course, not having a finder makes centering the Sun in your eyepiece more difficult, but with practice, it can be done. Set the mount down so the telescope is pointing in the direction of the Sun. Put the main solar filter on so you can check your progress, and then move the telescope around until it casts a shadow that produces a nice, sharp silhouette of the scope. The OTA will look circular. Now move your telescope up or down with your hand controller, slow motion controls, or very carefully by hand if required while looking through the eyepiece. You will not get a warning when you are close, but you should be able to align with the Sun using this method. Practice ahead of time before any big event, like an eclipse, to make sure you’ve got the process down.


  • Filter Your Optical Finder. This solution is not recommended for a reflex or red dot finder since it is too easy to accidentally look around the window. If you have one of these finders we recommend you either remove it or replace it with a dedicated solar finder (see below).



    To make your optical finderscope safe for solar viewing you’ll need to buy a piece of Baader Solar Film for Visual Use. This film comes in different size sheets and cuts easily with scissors, allowing you to make your own filter. You can go super low-tech and use a rubber band to hold a piece of the film firmly around the finder or you can get fancy and build your own slip-on solar filter. However you attach the solar film, you need to make sure there are no light leaks at all and that it doesn’t accidentally fall off when you move your telescope around. Any unused film can store flat between two pieces of cardboard and will keep for years. It is nice to have around, just in case of a solar emergency :-)



  • Buy a Dedicated Solar Finder. Check out the Tele Vue Sol-Searcher Solar Finder. This special finder can only be used when observing the Sun, but it works very well. The Sol-Searcher is reasonably priced and can be attached to your telescope with Velcro or with #10-32 screws (user supplied).

Description
Description
To ensure that the solar filter you buy will fit properly, please take a few moments and measure the outside diameter of your telescope, spotting scope or binoculars before you order. Remember, the solar filter needs to fit snugly around the front of the tube assembly that holds the optics. If the filter is slightly larger than its diameter, the filter can be made to fit by the addition of self-stick felt spacers to the inside of the cell. However, if the filter is too small it will not fit, and that would be a shame. So please, measure before you order. Thanks.

Spectrum Full Aperture Glass Solar Filter for 283 - 289 mm OD Scopes


This Spectrum Full Aperture Glass Solar Filter fits the following instruments:

  • Celestron 10" Newtonian
  • Orion 10" SkyWatcher


The ST1150G Full Aperture Glass Solar Filter with 293 mm inside diameter provides a safe way to directly view the sun. It allows the maximum amount of light possible to pass through to your telescope, using the entire aperture of your optical tube to enable the finest daylight viewing quality with limited atmospheric instability. When instability does occur, a mask can be placed over the filter for sufficient aperture reduction.

When directly viewed using this durable premium solar filter, the sun will appear in an organic yellowish-orange state. This filter contains felt padding and a centered aluminum cell that attach to the end of the telescope with nylon thumb screws. The ST1150G Solar Filter is made with hand-selected glass of superb quality with reflective coatings that are meticulously inspected.

This filter comes in foam-lined box with plastic wrapping to avoid any possible impairments while shipping. The box also provides a convenient method for storing the filter between uses. Full instructions on how to properly use and maintain your filter are included.

Spectrum ST1150G Full Aperture Glass Solar Filter Specifications


  • Inside Diameter: 11.5" (293 mm)
  • Clear Aperture Diameter: 9.5" (241 mm)
  • Fits instruments with an outside diameter range of 11.125" - 11.375" (283 mm - 289 mm)


In order to assure a proper fit, please be sure to measure the outside diameter of your telescope before committing to purchase a specific solar filter as telescope specifications may be modified with subsequent versions due to re-designs, etc.

What About Your Finderscope?

Adding this solar filter to your telescope will adequately filter the light coming through your focuser, but have you considered what you’ll do about your finder scope?

Here are some suggestions for dealing with your finder that will assure you do not damage your eyes (or anyone else’s) by looking at the Sun through your telescope’s unfiltered finder:

  • Remove Your Finder. Ditching your finderscope when solar viewing will remove the possibility of someone accidentally looking through it to spot the Sun. Of course, not having a finder makes centering the Sun in your eyepiece more difficult, but with practice, it can be done. Set the mount down so the telescope is pointing in the direction of the Sun. Put the main solar filter on so you can check your progress, and then move the telescope around until it casts a shadow that produces a nice, sharp silhouette of the scope. The OTA will look circular. Now move your telescope up or down with your hand controller, slow motion controls, or very carefully by hand if required while looking through the eyepiece. You will not get a warning when you are close, but you should be able to align with the Sun using this method. Practice ahead of time before any big event, like an eclipse, to make sure you’ve got the process down.
  • Filter Your Optical Finder. This solution is not recommended for a reflex or red dot finder since it is too easy to accidentally look around the window. If you have one of these finders we recommend you either remove it or replace it with a dedicated solar finder (see below).

    To make your optical finderscope safe for solar viewing you’ll need to buy a piece of Baader Solar Film for Visual Use. This film comes in different size sheets and cuts easily with scissors, allowing you to make your own filter. You can go super low-tech and use a rubber band to hold a piece of the film firmly around the finder or you can get fancy and build your own slip-on solar filter. However you attach the solar film, you need to make sure there are no light leaks at all and that it doesn’t accidentally fall off when you move your telescope around. Any unused film can store flat between two pieces of cardboard and will keep for years. It is nice to have around, just in case of a solar emergency :-)

  • Buy a Dedicated Solar Finder. Check out the Tele Vue Sol-Searcher Solar Finder. This special finder can only be used when observing the Sun, but it works very well. The Sol-Searcher is reasonably priced and can be attached to your telescope with Velcro or with #10-32 screws (user supplied).
Specifications
Specifications
Model Number ST1150G
Filtering Wavelength White Light
White Light Solar Filter Material Glass
Minimum Inside Diameter of Filter 11.14" (283 mm)
Filter Maximum Outside Diameter 11.37" (289 mm)
Solar Filter Aperture (mm) 241 mm
Filter Fits Known Telescopes Celestron 10" Newtonian; Orion 10" SkyWatcher
White Light Filter Full Aperture or Off-Axis? Full Aperture
Warranty Spectrum 30 Days
What's in the Box?
What's in the Box?
  • Spectrum Full Aperture Glass Solar Filter for 283 mm - 289 mm OD Telescopes
  • Spectrum Telescope Full Aperture Glass Solar Filter for 283 mm - 289 mm OD Telescopes
Our Customer Commitment
  • Fast Shipping, Same or Next Day: You made the commitment to purchase, now you want that new item fast, we get it! At High Point all in stock orders ship within 24 hours, pending internal credit card approval.Read more ...
  • Unlimited Tech Support Forever: One of the many perks of being a High Point customer is that you get access to our tech support team forever! We are astronomers at heart and truly enjoy helping fellow amateurs achieve success in the field! Read more ...
  • 30 Day Return Policy: Ordered the wrong product? Don't worry, we'll take the majority of our products back within 30 days of the purchase date.We want to get you into the observing setup that bests fits your needs. Read more ...
  • Guaranteed Price Match: Call or email us if you find a better price on a product! Provide a link for our team to confirm the price and within a matter of seconds you'll have a price match providing the re-seller is within the USA and authorized by the manufacturer to sell the product of interest. Read more ...
  • We're Your Connection To The Manufacturer: In the event there is a warranty issue with a product purchased from High Point, we will serve as the liaison between you and the Manufacturer. The net result is faster, more attentive service from the Manufacturer and an enhanced customer experience. Read more ...

Please wait...