Sep 12

GEM28 – Latest Tests

UPDATE Sept. 14, 2021: It seems my DEC problems are caused by Differential Flexure. The guide scope or lens are drifting during the session relative to each other (in a range that is mostly not noticeable by eye). The reason can be various: pulling cables, insufficient attachment of components… So I’ve ordered rings also for […]

Sep 5

Sh2-132 Lion Nebula

The Lion Nebula is much more faint than I thought. So I spent the last 2 nights for it. It’s a very star rich region. More than 4 hours integration. Each session is calibrated for it’s own, then registered and integrated all at once. Details Shooting impression:

Sep 3

M33 Triangulum Galaxy

That wasn’t funny at all… after 17 lights suddenly I noticed a huge drift in DEC, M33 were not centered anymore. But a correction was not possible, I was able to navigate within the menu on the hand controller, but no reaction on commands… even back to zero position was not possible… 🙁Only after a […]

Sep 3

IC1848 Soul Nebula

Finally again clear skies 🙂 This time only 4 out of 79 lights were unusable due to slight DEC trails… still searching for the ideal MGEN settings. Details

Aug 21

iOptron GEM28 GoTo

I’ve used the GoTo system of the iOptron GEM28 for a few weeks now and I’m really impressed about the accuracy 🙂 The traditional 2 or 3 star alignment is ok, but the real precision comes from the Sync. to Target function. It enhances significant the GoTo accuracy. Enhance GoTo accuracy Before I start the […]

Aug 21

Star Cluster Group

Full Moon time = star cluster time! This group of cluster were very well in sight. NGC654, NGC659, NGC663, M103, and IC166. Everywhere star clusters 😉 Details

Aug 15

NGC 7822

After my polar scope disaster and recovery I captured NGC 7822 last night to check if everything works fine again. It was a very warm night. More than 20°C even at the end of the session… ​​​​​​​Drizzled 2x and resized to original resolution. Details

Aug 15

Polar Scope Calibration

Yesterday afternoon I aligned the polar scope reticle in vertical and horizontal direction towards a distant buidling because the night before I suspected that it’s not aligned well anymore. I was right! I’m not sure if this is my mistake. Before that all started, I transported the mount with attached counter weights from my balcony […]

Aug 14

Caldwell 9 – Cave Nebula

Still not happy with DEC performance, but at least I can setup the mount in the darkness without light now 🙂 This image contains only 75% of the lights… On the other 25% there are clouds or DEC error 🙁 Details

Aug 12

Bubble Nebula Wide Field

Again testing the gear mesh adjustment… and I’m still not done 🙁 So far I adjusted the gear meshing 4 times in the range of 1/8 turn counter clockwise and 1/8 turn clockwise, since the manual says not more than 1/4 turn in total. I contacted iOptron again regarding this issue and they told me […]