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Thread: Decent solar filter for reasonable price??

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    Default Decent solar filter for reasonable price??



    Hey Gang... I am looking for a decent quality solar filter for my celestron nexstar 130slt. This is my first telescope and I want to view our sun. I am looking for a decent filter at a reasonable price... Looking for suggestions from you guys, because I am new to using a telescope and I need your expertise!! Thanks in advance for your help!! I really appreciate it!! Dewey

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    Default Re: Decent solar filter for reasonable price??

    You can buy Baader film by the sheet and make your own full aperture solar filter with it.

    Cut two strips of card, bend them into rings that fit snugly, one inside the other, with the smaller one fitting snugly onto your telescope OTA.
    Then sandwich the Baader film between them. It doesn't need to be as tight as a drum.

    Just make sure it fits snugly onto the OTA so that it won't fall off or blow off.

    It doesn't need to be taut.jpg
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    Default Re: Decent solar filter for reasonable price??

    And remember to keep your finder scope covered.
    ,Lunt60,BF1200. Quark Chromo, Lunt Herschel solar wedge, DMK21.
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    Default Re: Decent solar filter for reasonable price??

    Hi!!

    I bought this sheet https://www.amazon.com/Solar-Filter-...r+sheethttp://, it is on the way and I hope to have it in my hand on Monday, there are filters with other sizes, previously I made a black 3mm acrylic frame with screws to fix the sheet and with pins to fix it to the telescope... In a few hours I upload a photo so you have an idea of what I did.
    Meade Polaris 130mm EQ, Meade Adventure Scope 80mm, Bushnell Northstar 76mm, Tasco refractor 60mm, Bushnell Instafocus 10x50, Meade 20mm Super Plössl Series 4000, Celestron UHC/LPR filter, Solomark Moon & Skyglow filter, Solomark IR/UV cut filter, MS Lifecam Studio mod., Meade Smartphone adapter Pura vida & Clear skies!!

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    Default Re: Decent solar filter for reasonable price??

    Dewey,

    Just to so that you are aware, the filter suggested so far are just "white light filters". These will show you sunspots and the granulation of the surface, but they won't show you prominences or filaments that are seen in "Hydrogen Alpha solar scopes". These are totally different, and much more expensive. The least expensive of these, new, is the Coronado PST. But it is also possible to convert an ordinary refractor into a H alpha scope with a Daystar Quark filter - I have one of these. I do also have a white light filter that I made out of the Baader Solar Film - it is very good too, though each filter type is for a different application.

    Alex.

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    Default Re: Decent solar filter for reasonable price??

    Personally I'm debating on buying another thousands oaks optical solar filter I have a glass 2+ for my 80mm one thing I will say is if your new to solar filters and not sure what solar filter you need measure the front of the telescope where the light comes in you need to make sure that you get the right size that came go around the outside of the dew shield, the first solar filter I bought from thousands oaks optical I ended up getting the wrong size because apparently Celestron made the dew shield a bit bigger then what thousands oaks optical had on their website my Celestron Powerseeker 80eq was really 4inches not 3 inches so it was my mistake for not measuring the dew shield.

    Also check your filters using a 100watt light bulb before every use to make sure their is no pin holes.

    I had a heck of a time trying to find the Sun without a finder scope you might need to buy yourself a solar finder scope.

    I was doing it a hard way I'd recommend you not try to do but I'd try to align my telescope where the sun was and end up blinded for a few secs which is the dumbest thing anyone could do but sadly I didn't wanna buy a filter maybe some cheap solar filter glasses from Orion might help.

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    Default Re: Decent solar filter for reasonable price??

    When you set up your scope look at the shadow on the ground. When it is the smallest you will pretty much be on target.
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    Default Re: Decent solar filter for reasonable price??

    Local, there's no need to buy a Sun finder scope, when making one for yourself is as easy as pie!

    Below are some pics of the one I made for myself. Just a couple timber off-cuts, a strip of aluminium, and a piece of plastic tracing paper. I won't put instructions as the pics should give you inspiration to come up with your own, and I made this one just with what I had lying about at home. After all, it is nothing more than a pin-hole camera! Only thing I can suggest is once you've got your Sun finder made, locate the sun through the main scope, centre the image in the field of view, then shift the finder around until the image is also centred and then make a little mark on the tracing paper to mark the centre position. As my finder is attached on just one mounting hole, I just need to spend 30seconds tweeking the finder. Doesn't get any easier


    Attachment 152383 , Attachment 152384 , Attachment 152385

    These pics show my refractor set up on a tracking equatorial mount, but these days I just set up on a manual alt az mount which I find quicker to set up, and this type of solar finder is the duck's nuts on reacquiring the sun quickly and easily.

    Alex.
    Last edited by mental4astro; 03-18-2017 at 12:37 AM.

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    Default Re: Decent solar filter for reasonable price??

    Quote Originally Posted by localhost View Post
    ...make sure that you get the right size that came go around the outside of the dew shield, ...

    Also check your filters using a 100watt light bulb before every use to make sure their is no pin holes.

    I had a heck of a time trying to find the Sun without a finder scope you might need to buy yourself a solar finder scope.
    Three points -
    * You rarely need a dewshield for daytime - so just measure the OTA diameter with the shield retracted
    * No need to find a 100W light, you can just hold the filter up to the sun to check for flaws before you start - the eye has an aperture of several mm, so even if there are a few pinholes, they're unlikely to cause permanent damage. A pin-hole is tiny compared to your #1 eyeball aperture, so can be ignored
    *to find the sun, mount the filter (plus a cap on your finder) - then minimise the size of the shadow of the 'scope on the ground behind the scope. When the shadow is just about a circle, (and assuming it's not already in your eyepiece) take the EP out and you'll most likely see the light of the sun off to one side. Move it to the centre and it'll be in your eyepiece.
    ProfEclipse likes this.
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    Default Re: Decent solar filter for reasonable price??

    This is what I was talking about before
    20170317_193825.jpg
    20170317_193849.jpg
    Meade Polaris 130mm EQ, Meade Adventure Scope 80mm, Bushnell Northstar 76mm, Tasco refractor 60mm, Bushnell Instafocus 10x50, Meade 20mm Super Plössl Series 4000, Celestron UHC/LPR filter, Solomark Moon & Skyglow filter, Solomark IR/UV cut filter, MS Lifecam Studio mod., Meade Smartphone adapter Pura vida & Clear skies!!

 

 
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