Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  48 sig Ori  ·  50 zet Ori  ·  Alnitak  ·  B33  ·  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  Sh2-277  ·  The star Alnitak (ζOri)  ·  The star σOri  ·  VdB51
more on alnitak, trying new equipment combinations, Matt Fulghum
Powered byPixInsight

more on alnitak, trying new equipment combinations

more on alnitak, trying new equipment combinations, Matt Fulghum
Powered byPixInsight

more on alnitak, trying new equipment combinations

Equipment

Loading...

Acquisition details

Loading...

Description

my guiding performance the last week has been abysmal, so I decided to see what I could do to rectify it, without totally dismantling my optical train. I put the .8x reducer/flattener in front of the ZWO OAG, and connected those to my X-M1; oddly, this spacing (~65mm) seems to produce better results with the AT72 than the factory spec 55mm. I still had to trim the outer 25% or so of the frame, but that's better than it has been. I also rebalanced the mount to be more camera and east heavy; it was nearly totally balanced before, but now it's skewed pretty heavily toward the camera and east. The combination of the changes really helped, as my RMS error dropped to under 2" - I can totally live with that.

Comments

Sky plot

Sky plot

Histogram

more on alnitak, trying new equipment combinations, Matt Fulghum