Jump to content

Narrowband

thenews24

Members
  • Posts

    233
  • Joined

  • Last visited

Everything posted by thenews24

  1. I do use the Geoptik. Here's a quick video of the adapter to lens, with 1.25" HA filter threaded in. You can use 2" in this adapter if needed. geoptik_to_lens.wmv
  2. A Bahtinov mask helps. This was shot with the 200mm f/2.8 with that microfucser and bahtinov mask. Even with a HA filter in the train, I can get nice diffraction spikes with enough exp bin combo: foucisng 200mmf2.8withmask.wmv
  3. I personally love the 200mm f2.8, which I always shoot wide opne. With the help of a microfocuser, I can get sharp, pinpoint stars edge to edge. I am currently using the lens coupled to the Atik 314. Although this is not the ideal combination in temrs of image scale, I can still achieve nice round stars and the FOV is decent. When m tired of using ccd's, I'll throw the lens on the DSLR for some really wide views, and the reults are superb. For under $1,000 USD, this lens is the best option for fast, wide field imaging on a budget, although the geoptik adapter will add to the cost. Here's my setup. I guide with a 400mm f/5 orion shortube. It is overkill really, but by inmaging at half of the guide FL, i can get up to 20- 30 min subs no problem.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.