Category Archives: 200mm lens and ASI 2600MC-Pro camera

I am looking at old data from all the rigs to calculate the best sub-exposures to use from my Bortle 4.5 skies. This is a stack of 4-minute subs on Arcturus using the 200mm lenses and 2600MC Pro CMOS cameras.

Managed to get 14 x 3-minute subs with the 200mm lenses on Vega last night after a LONG and weary battle setting up. Realised that the head amplifier has probably given up in M26(1) camera and that led to all … Continue reading →

I combined an earlier 2-frame mosaic of the Altair region with the recent single-framer, both taken using the 200mm lenses and ASI 2600MC Pro CMOS cameras, and this is the result. Probably no more to be done here.

Got 2/3rds of the way through setting up the 200mm lenses last night, and this is just 9 x 5-minute subs on cameras 3 & 4 on the Pleiades. For such a short exposure time I am pretty pleased with … Continue reading →

A bit late this year for the first outing of the season, but managed it in the end. This is the first image from the Canon 200mm prime lens array to use all 3 lenses at the same time. So … Continue reading →

I reprocessed all the recent 200mm lens data on this one and then cropped down to centre Arcturus whilst including Napoleon’s Hat (below-right of Arcturus).

I just reprocessed the Corona Borealis 3-framer taken with the 200mm lenses and 2600MC Pro CMOS cameras. This data was collected in June 2024 under astronomical twilight.

It was clear again last night, but as the Moon was beginning to get more intrusive I only intended to work on the collimation of camera5 (200mm lens). However, after getting the best collimation I could, it felt a shame … Continue reading →

Another clear evening last night (we’ve had a good run this last week) and I got 13 x 10-minute subs with the 200mm lenses on the M106 region. If I make a 2-framer out of this by getting the frame … Continue reading →