I thought it was worth trying sketching again considering the diabolical weather. This is done with white charcoal pencil on black cartridge paper (and so isn’t reversed in the scan). This I found actually much easier than sketching in pencil. It shows the craters Orontius, Saussure, Huggins, Nasireddin and Miller and is drawn from a photo taken at 21h15 on 28th April this year.

Lucky imaging: mosiac of 9 images using best 25% or 50% frames from 500 video frames.

A beautiful halo showed all evening today. Jupiter is also visible just to the right of the Moon.

    Integration time (running total):
    * OSC 23 X 300s (115m)
    * Total: 1h55m

Notes

Seeing index: 4/2
Jet stream: Average Transparency: Average

Lucky imaging: best 25% frames from 2000 video frames. Mosaic of two images

    Integration time (running total):
    * OSC 5 X 300s (30m)
    * Total: 0h30m
    

Between the clouds the other day I squeezed in 30 minutes of exposure time on the border between Cassiopeia and Cepheus, a region full of interesting objects. The view in the photo is wide field - 6.6 x 4.8 degrees. Due to the short exposure the H alpha clouds are mainly colourless (e.g. the Lobster Claw Nebula) and the resolution is somewhat poor but I thought it quite an interesting exercise to point the…

Integration time: Main image: Lucky imaging: best 50% frames from 4000 video frames.
Image below: Lucky imaging: best 50% frames from 1000 video frames.

    Integration time (running total):
    * OSC 365 X 60s (365m)
    * Total: 6h05m
    
    Integration time target
    * Target: 6 hours
    * Progress: 100%

Notes

Seeing index: Excellent 5/4
Jet stream: Poor (32m/s) Moon phase: 80%
Transparency: Poor

Almost defeated by the dire Autumn weather. On the night of 9th a brief 45 minute spell with gaps to the heavens gave poor views of M31 but surprisingly good ones of M57 (x150). The following morning dawned clear (again briefly, after another night of thick cloud) to the beautiful sight of the crescent Moon with earthshine, Venus and between the two the still-visible star Regulus in Leo.

This morning gave a really excellent view of Jupiter in the Dobsonian. The sky was lightening constantly as I watched and the reduction in contrast against the sky I believe enhanced considerably the view and removed any diffraction spiking that might have intruded. Venus as a semi-crecent and Sirius were also prominent.

    Integration time (running total):
    * OSC 88 X 300s (440m)
    * Total: 7h20m

    Integration time target
    * Target: 7 hours
    * Progress: 100%

Notes

Mon 4th September