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North America nebula, Richard Kelley
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North America nebula

Getting plate-solving status, please wait...
North America nebula, Richard Kelley
Powered byPixInsight

North America nebula

Equipment

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Acquisition details

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Description

This is a preliminary version with only minimal processing. I wanted to test out a portable rig consisting of the Rokinon 135mm f/2, ZWO ASI294MC, and iOptron SkyGuider Pro. I installed the iOptron iPolar camera in the mount and it works great. You just have to be patient while locking down the mount after adjustments as this process changes the mount pointing slightly as you tighten, and then be sure to check/tweak it after target framing and just before taking subs. The residual drift between 1 minute subs was only about a pixel, so guiding wasn't necessary. The aperture was set to f/2 for maximum light and I used a Bahtinov mask, which made it a lot easier to achieve precise focus. The focus ring of this lens is smooth and well-damped, but just the slightest bit of pressure to the ring was the difference between being in and out of focus.

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North America nebula, Richard Kelley

In these public groups

Samyang 135 f/2