23/2/2021 M51 Whirlpool Galaxy

Sony A7rii 200-600mm @600mm F6.3 ISO1600

Skywatcher Star adventure,200mm guide scope with QHY5 guide cam, PHD2 autoguiding
49*60s Stack in Sequator, DXO process

m51_DxOWM.jpg

2/3/2021 M81 + M82

M81 Bode’s Galaxy & M82 Cigar galaxy

A7rii 600mm, 2X crop

Mount: skywatcher star adventure, PHD2 guide with QHYl-5ii

F6.3, ISO800, 45s* 40 + 60s* 20

Sequtor stack, DXO post process

m81m82DN_dxowm.jpg

1/18/2021 M45 + NGC1499

M45, The Pleiades and NGC 1499, the California Nebula

A5000 mod, 85mm F2, ISO250, 51 x 30s , 10 Bias, 5 dark

Sequtor stack, DXO post process
Ideal plan vs Reality LOL

stack_DxOwm.jpg
photo6064587787702741948.jpg

1/12/2021 auto guide first tryout

QHY5-II guide cam, 200mm guide scope

Windows 10 PHD guiding 2

Sky watcher star adventure

Tested with M42, A7rii @ 600mm 30s * 15, 60s * 12, 90s * 5

Sequator stacking, DXO PL2 post process

M42stackdxo_DxOwm.jpg
Screenshot 2021-01-12 214415.jpg
photo6334601403665853252.jpg

1-5-2021 M31,M42,M45 at PTC

A7siii 200-600mm F6.3
Sky watcher adventure

Sequator stack, DXO photolab post process

m31_DxOcropwm.jpg

M31 30s F6.3 ISO3200 x 64 Frame


m42_DxOcropwm.jpg

M42 20s F6.3 ISO3200 x 20 Frame + 30s F7.1 ISO4000 x 20 Frame


m45_DxOcropwm.jpg

M45 30s F6.3 ISO4000 x 35 Frame

2020 Great Conjunction

2020 great conjunction

Jupiter Saturn 6 arc minute apart

A7rii 600 mm on Skywatcher Star adventure

crop to 30arcmin frame

1/20 f6.3 iso 2000 single frame

only 3minute shooting window due to cloud

great conjunction 2020.jpg

A7siii Video M42 orion

4K S&Q mode, 1s per frame, ISO51200, 200mm F/4 no tracker

Slog3, ACE transform to 709 in resolve

207 frame stack result(sequator):

out2_DxO.jpg

ISS Lunar transit

5/11/2020 ISS Lunar transit in Hong Kong

Sony A7rii + 200-600mm in S35 4K 30P, Slog2

Digital crop 2X and post process in davinchi resolve

Transit info:

2020-11-05 22:47:10.84

ISS angular size: 25.49″; distance: 1084.11 km
Angular separation: 0.2′; azimuth: 70.3°; altitude: 18.3°
Center line distance: 0.06 km; visibility path width: 15.32 km
Transit duration: 1.93 s; transit chord length: 30.4′

Moon phase: 78.0%