The Dutch Observatory » Uncategorized

tramakers — Wed, 20 Oct 2021 15:27:37 +0000

Clear skies continue with good seeing. AR2886 is not showing much of activity and staying pretty much stable. A few prominences around the disk remain. Full disk images today and close ups of Active Region 2886 in the three wavelengths.

tramakers — Thu, 29 Jul 2021 15:57:49 +0000

Imaging in a Sauna? After my “daily exercise” of fast walking 2 miles at a 4mph pace and observing at 85 degrees in 93% humidity. That’s what today’s session was. Solar Activity is very low and we have a spotless Sun again for Spotless day 909 since Solar Max. The last spotless day we had on May 7th. However, the filaments still remain. So today’s images of the full disk and close ups of the plages and filaments left. Please note that the Ha close up of the Southern Hemisphere filaments is a wider FOV than my normal close ups.

tramakers — Sun, 04 Jul 2021 21:34:39 +0000

The problems with posting images on the 4th have gone away on the 6th. Probably heavy traffic on the web on the 4th. Clear skies with relative good seeing. We have reached a new milestone for the new Solar cycle. To the best of my recollection we now have had a first type R2 and type R3 flare. While turning to the backside of the Sun (it now is not visible anymore), AR2838 produced an X-1 flare, at 1429UT on the 3rd, as well as a pair of M-1 flares later on. While this happened, AR2836 has decayed to a plage, but a new region has been named. Region AR2839 popped up in the NW quadrant and has already produced a C1 flare. So, today images of the full disk as well as close ups of the mentioned regions, including the faculae that followed AR2838 at the NWLimb.

tramakers — Thu, 28 Jan 2021 16:56:26 +0000

Clear skies with below average seeing. AR2797 is still visible approaching the western limb. A new Region has been named, AR2800. This time in the northern hemisphere. Another plage can be observed near the meridian also in the northern hemisphere. A number of nice prominences were also visible on the eastern limb. Images today of the mentioned areas as well as full disk images.

tramakers — Sat, 14 Nov 2020 17:49:03 +0000

Clear skies today but many wide con-trails made the session much more challenging. AR2782 has decayed in WL and I could not see it. However in Ha and CaK the plages both AR2781 and 82 were nicely visible. I am still imaging on my old laptop. The replacement battery for my main laptop is supposed to arrive next Tuesday. So until them it will be a handicap.

tramakers — Thu, 02 Jul 2020 16:17:17 +0000

Clear skies this morning with average seeing. The small area in the SE continues to show some pores, but no spot has been registered, so the area stays un-named. However, other areas on the Sun make up for it. Some real nice filaments are visible in the NE, and a huge prom shows in the NW with a smaller, but brighter one in the SE. Overall activity remains low. Today full disk images and close ups of the mentioned areas.

tramakers — Tue, 07 Jan 2020 17:54:12 +0000

The skies were clearing up during my observing session. SWPC carried AR2755 over into today, however at the time of observing the spot was not visible. We have a new region coming around the Eastern limb, which might have a pore or small spot. According to my measurements in WinJupos, this area is in the Southern hemisphere and its magnetogram shows an old Cycle 24 polarization. However there is a very small reverse polarized area in the NE quadrant, which is visible also in the CaK image. A faculae is visible in the WL image, and a nice plage in Ha and CaK. The filaments South of the AR2755 plage show very nice and show some activity. Compare to yesterday’s images. Yesterday’s Prom in the SW is gone, but we have some small proms in the NE and SE.

tramakers — Tue, 21 May 2019 17:47:50 +0000

Clear skies, but my mount was acting up. Another spotless day. A blank Sun with the exception of a few faint proms at the Western limb. In addition, we noticed some very small reverse polarized areas in the Northern hemisphere. Yesterday I only managed to capture one image in 540nm. So today full disk images in the three wavelengths as well as yesterday’s image in 540nm.

tramakers — Tue, 25 Dec 2018 19:34:08 +0000

Merry Christmas to all!!! Sunny skies with better than average seeing. Solar activity remains Very Low on another spotless day. The plage in the eastern hemisphere remains nicely visible, but I forgot to image the close up in Ha. Two proms were visible, one at the SE limb and another in the NW. I also captured the eastern faculae in 430nm.

tramakers — Mon, 21 May 2018 15:40:28 +0000

After mostly cloudy skies yesterday, clear skies this morning with good seeing. We observe a new, yet not named, sunspot at the Eastern limb. After 7 spotless days we can be tracking a new area again. The nice filament is still there and the Western limb showed two prominences, on of which was very faint. Full disk images today in the three wavelengths, as well as close ups of the mentioned areas.