which filter ?

[Cdsinuk]

Hi all, another remedial question   so when i look at planets through the telescope the image is always blown out? do you use a filter to calm this down to help with colour and detail? .  i use photographic filters for terestrial photography, but astro is a different discipline...

[Galen Gilmore]

There is a variable polarizer filter sold by Orion

 https://www.telescope.com/Orion/Accessories/Telescope-Eyepiece-Filters/Orion-Variable-Polarizing-Eyepiece-Moon-Filters/rc/2160/pc/-1/c/3/sc/48/e/14.uts 

I have no experience with it but it may be very useful. But I'm not sure if they ship internationally, so this may not be available for you. What telescope do you have?

[Cdsinuk]

Hi many thanks for your reply, i am  only a beginner to astro photography, i have not had a great deal of success yet but i am wanting to learn and improve,  i use Celestron Astromaster 114eq, and a national geographic 70mm refractor on a goto mount, Canon 600D 75/300 mm , i had heard to use a green filter but the one you have provided the link for looks like it could be of use, i will search for similar here in the UK, many thanks for your help, much appreciated 

regards

Chris   

[Gerry Casa Christiana]

The Baader longpass filter is very good. Blocks the blue light of the spectrum so can help a lot. 

Gerry

[geordie85]

If I understand you correctly, when your trying to image planets, they are blown out? Is this correct? If so, you'll need to turn the ISO down to around 400.