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Stars

Star trails with light pollution — Combination of 400 individual images during the predicted Tau Herculid meteor storm. However, this did not take place or consist of dark matter. It was also cloudy most of the night. Taken on the Bözberg. The yellow clouds due to light pollution are mainly from Basel. — Nikon D850, Nikkor AF-S 14-24 mm 2.8G, 31. Mai 2022

web20220531_DSC_9420.jpg — EXIF: Nikon D850; Δt=20 s; f=14 mm; f/2.8; ISO 2500; 2022-05-31 0:59:31

web20221029_d850_00707.jpg — EXIF: 2022-10-29 21:51:07

Sun

Sun on 20 June 2022 in Hα, stacked — Second try with new ZWO ASI 290MM on a Lunt Hα 60 telescope. Stacking of 47 single 16 bit frames with 4.5 ms exposure using Autostakkert!3. HDR toning with Photoshop 2022 and orange colour filter.

Sun on 21 June 2022 in Hα — ZWO ASI 290MM on a Lunt Hα 60 telescope. Stacking using Autostakkert!3. Postprocessing with Photoshop.

Sun on 21 June 2022 in Hα — ZWO ASI 290MM on a Lunt Hα 60 telescope with 2.5x Barlow lens. Stacking using Autostakkert!3. Postprocessing with Photoshop.

Sun on 21 June 2022 in Hα — ZWO ASI 290MM on a Lunt Hα 60 telescope with 2.5x Barlow lens. Stacking using Autostakkert!3. Postprocessing with Photoshop.

Sun on 21 June 2022 in Hα — ZWO ASI 290MM on a Lunt Hα 60 telescope with 2.5x Barlow lens. Stacking using Autostakkert!3. Postprocessing with Photoshop.

Sun on 23 June 2022 in Hα — ZWO ASI 290MM on a Lunt Hα 60 telescope. Stacking of sharpest 50 out of 500 frames using Autostakkert!3. Postprocessing with Photoshop. — EXIF: 2022-06-23 12:12:49

Sun on 23 June 2022 in Hα — ZWO ASI 290MM + 2.5x TeleVue Powermate on a Lunt Hα 60 telescope. Stacking of sharpest 50 out of 500 frames using Autostakkert!3. Postprocessing with Photoshop. — EXIF: 2022-06-23 12:18:56

Sun on 23 June 2022 in Hα — ZWO ASI 290MM on a Lunt Hα 60 telescope. Stacking of sharpest 50 out of 500 frames using Autostakkert!3. Postprocessing with Photoshop. Stitch of two images. — EXIF: 2022-06-24 10:14:00

Sun in Hα on 29 June 2022 — Sun in Hα on 29 June 2022, 3/3: That's how I like it best. A single 16 bit image with shadows and highlights nonlinearly enhanced to reveal both the bright solar surface and the much fainter prominences along the edge. It's not scientifically correct, but looks more natural. ZWO ASI 290MM, Lunt Hα 60.

Sun on 3 July 2022 in Hα — ZWO ASI 290MM, Lunt LS60T, 2.5x TeleVue Barlow.

Sun on 3 July 2022 in Hα — ZWO ASI 290MM, Lunt LS60T

Solar Prominences on 3 July 2022 in Hα — Size of Earth as comparison. ZWO ASI 290MM, Lunt LS60T, 2.5x TeleVue Barlow.

Sun on 5 July 2022 in Hα — ZWO ASI 290MM, Lunt LS60T — EXIF: 2022-07-05 12:15:00

Solar prominence on 5. Juli 2022 in Hα — ZWO ASI 290MM, Lunt LS60T, 2.5x Barlow

Sun on 8 July 2022 in Hα — ZWO ASI 290MM, Lunt LS60T

Sun on 11 July 2022 in Hα — Panorama of three images to get the full Sun, because the size of the camera chip and the sweet spot of the Hα filter are not big enough to cover the entire disk. Actually they're much more images: 3 x video sequences of 500 frames, taking the sharpest 20% and 1 video sequence for the flat frame to compensate the brightness changes of the Hα filter, the whole telescope and dust. ZWO ASI 290MM, Lunt LS60Ts

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Sun on 12 July 2022 in Hα — Panorama of three images to get the full Sun, because the size of the camera chip and the sweet spot of the Hα filter are not big enough to cover the entire disk. Actually they're much more images: 3 x video sequences of 500 frames, taking the sharpest 20% and 1 video sequence for the flat frame to compensate the brightness changes of the Hα filter, the whole telescope and dust. ZWO ASI 290MM, Lunt LS60Ts

Sun on 15 July 2022 in Hα — Sun on July 15, 2022 in Hα. ZWO ASI 290MM, Lunt LS60T

Solar prominence on 17 July 2022 in Hα — Size of Sun and Earth to scale ... and felt also the distance. ZWO ASI 290MM, Lunt LS60T

Sun on 17 July 2022 in Hα — Sun on 17 July 2022 in Hα. ZWO ASI 290MM, Lunt LS60T

Sun on 25 August 2022 in Hα — Sun on 25 August 2022 in Hα. ZWO ASI 290MM, Lunt LS60T

Sun on 26 August 2022 — Sun on 26 August 2022 in Hα. ZWO ASI 290MM, Lunt LS60T

Sun on 26 August 2022 — Giant prominence and bright flare compared to the size of the Earth. Lunt LS260T, 2.5x barlow, ASI 290MM. Postprocessing with Autostakkert and Photoshop.

web20220826_asi290mm_layers.jpg

Sun Hα, 5.10.2022 — Lunt LS60T, ASI 290MM. Postprocessing with Autostakkert and Photoshop. Panorama from 3 video sequences. Best 10% of 1000 frames with 16 bit depth.

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web20221022_asi178mm_pano.jpg

Moon

Lunar Eclipse of 16 May 2022 — Double layered lunar eclipse of 16 May 2022 at dawn. If the Earth was flat, so also would be its shadow on the Moon shortly before sunrise. Shot through a Williams Optics refractor with 735mm focal length, ratio f/7 and Nikon TC-20E II 2x teleconverter at Bözberg, Aargau. — EXIF: Nikon D850; Δt=1/10 s; ISO 800; 2022-05-16 4:47:15

Supermoon Rising — Rise of the full moon, which is just at perigee closest point to the earth in orbit:. Taken through a Williams Optics refractor with 735 mm focal length, focal ratio f/7 and Nikon TC-20E II 2x teleconverter from the terrace at home. — EXIF: Nikon D850; Δt=1/5 s; ISO 800; 2022-06-14 22:32:13

Schwyz

Hoch Ybrig — View from the Spirstock mountain station in Hoch Ybrig to the Großer and Kleiner Mythen and the sea of fog in the background. — EXIF: iPhone 8; Δt=1/4368 s; f=3.99 mm; f/1.8; ISO 20; 2022-12-17 10:27:24

Obwalden

Evening mood on the Titlis — Evening mood with the setting sun on the Titlis during the Helpers' Night on October 29, 2022, where we were allowed to stay up all night. Unfortunately, some cirrus clouds came up. — EXIF: iPhone 8; Δt=1/1780 s; f=3.99 mm; f/1.8; ISO 20; 2022-10-29 17:31:37

Sunset on the Titlis — The last bit of sun peeks out between the mountain peaks. — EXIF: iPhone 8; Δt=1/121 s; f=3.99 mm; f/1.8; ISO 32; 2022-10-29 18:18:08

Dawn on the Titlis — The alpine sky glows in the dawn. I hardly slept a wink that night. But it was nice! — EXIF: iPhone 8; Δt=1/40 s; f=3.99 mm; f/1.8; ISO 25; 2022-10-30 6:54:48

Camera — My Nikon D850 is still shooting for the following time-lapse movie. — EXIF: iPhone 8; Δt=1/121 s; f=3.99 mm; f/1.8; ISO 32; 2022-10-30 7:06:30

Rock in the sunshine — The first rays of the sun make the rock glow. With a decent telephoto lens and bokeh, which cuts out the rock in the background, this would have been a good photo. — EXIF: iPhone 8; Δt=1/121 s; f=3.99 mm; f/1.8; ISO 25; 2022-10-30 7:09:33

Solar Eclipses

Partial Solar Eclipse of 25 October 2022 — Taken through a 5 minute cloud gap at 11:54 CEST with Lunt LS60T H-Alpha telescope, ZWO ASI 178MM camera. Image postprocessing with Autostakkert and Photoshop.

Weather

Cloud lightning — Finally it rained again after the dry, hot summer and thunderstorms could form. Most of the lightning happened between the clouds. None discharged to earth. — EXIF: Nikon D850; Δt=3 s; f=56 mm; f/5.6; ISO 800; 2022-09-14 21:01:26

Date	Changes
2022-03-17	Navigation bar overhauled
2022-02-25	New: Epoch conversion of Equatorial Coordinates, Stars Timelapses
2022-02-24	Guestbook redesigned
2022-02-16	Changed to Apache PHP-FPM, HTTP/2, MPM Event for better performance. Upgrade to Debian 11
2022-02-04	In addition to ReCaptcha, implemented DNSBL query of the source IP for guest book to ward off annoying spammers.