If you are using imaging software which has a focus feature like FocusMax or Sharpcap you can use that to fine tune the focus.
Once close to focus you will need to fine tune the focus to get a sharp image. If you are like me with a backyard that is obstructed from such views you will have to use the moon when it is up, or work with the brightest star visible to make it easier to get close to focus. I find it much harder to use my camera to get back into focus when I am initially far out of focus than using an EP. This was the case after I configured my SCT with my 2X Televue Powermate for the recent Jupiter-Saturn conjunction. This is especially helpful if the telescope is way out of focus which can lead to a great deal of frustration.
If you have a good view of a distant power pole, tree or similar object you can rough focus on that with an inexpensive wide field eyepiece (EP) like this 26mm or longer focal length example along with a cheap diagonal which may have already been included with your telescope. Of course, there can be differences of opinion as to what is essential and what is optional, but based upon my personal experience and what I see posted by other practitioners of EAA I feel fairly confident that you will find the items below extremely useful.īefore an EAA session can begin, even before the telescope can be aligned, it is necessary to focus the telescope. There are many possible accessories one could use to enhance the EAA experience, but in this installment we will discuss only the ones which are most essential to have right from the start. Now we will look at the accessories most necessary for EAA. In the first four installments of this series on EAA we have covered the big ticket items needed to get started including mounts, telescopes and cameras.
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