In a previous Solar filter test I explored how various filters help with getting some better white-light Solar surface feature photos, and I had noted that while I was using the Baader Astrosolar Safety ND=5.0 film, some narrowband filters would benefit from the photo grade Astrosolar ND=3.8 film, as with allowing as much as 1/6310 of the […]
Baader Astrosolar Photo film ND 3.8
September 23, 2016 // by ecuador
Baader Astrosolar vs Thousand Oaks Black Polymer solar filter
September 11, 2016 // by ecuador
There are two popular kinds of inexpensive solar filters which you can buy in unmounted sheets, cut them and mount them yourself. The older kind is the black polymer type, with the most famous kind (especially in the US) being the one that Thousand Oaks makes (their glass filters are also popular), while the currently […]
Imaging the sun in white light and Baader Solar Continuum or other color filters
May 7, 2016 // by ecuador
One of the most inexpensive accessories you can get for your telescope is the Baader AstroSolar safety film which you can use to safely observe and photograph the sun. Baader also has the 540nm-pass “Solar Continuum” filter to improve the definition of some solar features, so I thought I’d run a little experiment to see exactly […]
DIY: Reducing DSLR Vignetting of 1.25″ Filter On 2″ Focuser
February 10, 2015 // by ecuador
We know how even with APS-C sensor you need a 2″ focuser to avoid significant vignetting. However 2″ filters are significantly more expensive (which can translate to quite some money for some nice AP filters that were recommended to me), and not as many options available (even fewer are available as clip-on and usually even […]