Final C/2018 Y1 Iwamoto with M36 & M38

Not really pleased with the results of my Iwamoto pictures, I started to do something different. In stead of taking the ISO 3200 or ISO 6400, I took the ISO 1600 pictures.The Nikon Raw was converted to DNG and editing with CS4. Unsharped Mask was used but this time the threshold is increased. The pictures looks more sharp with the comet still bright enough to distinguish from the background stars. The open star clusters M36 and M38 are easy to recognize.

C/2018 Y1 Iwamoto near M36 & M38

Comet C/2018 Y1 Iwamoto near open star cluster M36 and M38. Picture taken on Feb 27, 2019 with Nikon D7500 on TLAPO80/480 f/6 and setting ISO6400 for 30s. DNG file and dark used for editing with CS4.

Iwamoto - My first animated GIF

My first animated GIF file :) and showing how "fast" Iwamoto is moving in front of the stars. Two pictures taken on Feb 26, 2019 UT20h15 and UT20h22. The GIF file shows in those 7 minutes how the comet C/2018 Y1 Iwamoto moves against the background stars. Each picture was taken with Nikon D7500 on TLAPO 80/480 f/6 ISO6400 with 30s exposure time. The GIF file was made using CS4 (Animation - Gif). DNG files are used without editing.

Solar Tadpole Shaped Jets responable for heating up the Corona?

Images from IRIS show the tadpole-shaped jets containing pseudo-shocks streaking out from the Sun.

Credits: Abhishek Srivastava IIT (BHU)/Joy Ng, NASA’s Goddard Space Flight Center

Are Solar Tadpole Shaped Jets responsable for heating up the Corona? At least a new discovery of pseudo-shocks adds another player besides Alven Waves and Nanoflares to that debate. According to NASA, it may contribute heat to the corona during specific times, namely when the Sun is active, such as during solar maximums.

When recently analyzing data from NASA’s Interface Region Imaging Spectrograph, or IRIS, scientists noticed unique elongated jets emerging from sunspots and rising 4,500 km up into the inner corona. The jets, with bulky heads and rarefied tails, looked to the scientists like tadpoles swimming up through the Sun’s layers.

Using computer simulations matching the events, they determined these pseudo-shocks could carry enough energy and plasma to heat the inner corona.

See the entire article via this link. 

ESA Lagrange Mission

Our Sun, the nearest star,  is a enourmous ball of plasma and emits every second millions of tons of high energy material. This happens in the form of Solar Wind, Solar Flares and Coronal Mass Ejections (CME). High energy particles and CME's can reach Earth as fast as 15 hours and electromagnic radiation from Solar Flares travels with the speed of light reaching Earth in 8 minutes. These Solar Storms can cause geomagnetic storms on Earth and are harmfull for satellites, astronauts and our infrastructure on earth. GPS systems, satellite communications and power grids can be effected with a result of power loss, communication loss, ....

ESA is planning for a dedicated space weather observatory which warns us in case of  these harmful eruptions of the Sun. The new spacecraft will operate at the fifth Lagrange point at a distance of 150 million km. On this stable position in space the spacecraft is able to observe the Sun and Earth sideways.

Sterrenkijkdagen op 15 en 16 maart

Dit jaar vinden in gans Vlaanderen de Sterrenkijkdagen plaats op 15 en 16 maart. Helios Averbode zal aanwezig zijn op 16 maart te Langdorp (achter het Wolfscafé). We verwelkomen iedereen die meer wilt weten over de sterren of wanneer je een kijkje wilt nemen doorheen een telescoop.

Leo Triplet M65 M66 NGC3638

My earlier picture of the Leo Triplet was reworked. The tiff file from DeepSkyStacker is edited with CS4 and manualy reworked with a dark frame. The coverage of the dark frame is set on70% and all "red" colors are removed. The result is much "darker".