This sunspot was particularly big, so I waited for the best moment to try and catch it.
Seeing wasn’t great, and my solar filter was a bit damaged, but the final image doesn’t look too bad anyway.

A very big sun spot from May 2016

Unfortunately, this will be the last image for a while.
Just a few hours later, someone opened my car, and took away my HEQ5 mount, together with all my eyepieces and the camera I used for all my planetary shots.

I’ll also be relocating in a while, so I’ll wait a few months before buying a new setup.
If someone is interested, I’m selling my current main optical tube here: http://www.astrosell.it/annuncio.php?Id=70007

This was meant to be an improvement to the previous ISS shooting, since I tried to do it with a bigger telescope, but the low altitude and the very bad seeing did actually worsen the quality.

The shape of the Space Station is anyway clearly visible, as it passes in front of the Moon. It is dark, this time, because it already entered in Earth shadow. We could actually see it rising, bright as usual, and then slowly fade until it completely disappeared just a few seconds before crossing the Moon.

Technical details of the shot can be found on the pagina Youtube.

Video on youtube: [url=https://youtu.be/uQ2MAcVAf6A]https://youtu.be/uQ2MAcVAf6A[/url]

This was meant to be an improvement to the previous ISS shooting, since I tried to do it with a bigger telescope, but the low altitude and the very bad seeing did actually worsen the quality.

Last august I had the chance to see the International Space Station passing in front of the moon right from my home.
The ISS is clearly visible many nights, and depending on the user position on Earth, it might align with some object in the sky.

These days I was reorganizing my gallery, and I found the original video.
So, after reprocessing it a while, I decided to republish it.

The ISS is really fast: the video is slightly slowed down. I remember that during the transit I couldn’t see the station, and I waited a few minutes because I couldn’t know if the transit already happened or not: it was still daylight, and in the original frames is barely visible.
Only after watching the video I could finally notice that tiny dot passing right in front of the moon.

ISS transits over the Moon.

Video on youtube: [url=https://youtu.be/Fcwv85l20Xo]https://youtu.be/Fcwv85l20Xo[/url]

I shot this with my 130mm F/5 telescope, to be sure to have a field wide enough to not miss the space station.

It was still daylight, with the moon very low in altitude.

Also, I had to track the moon manually, since this telescope has a dobsonian mount.

For this shot, I used my old Celestron Astromaster 130, in an alt-azimuth mount, and my QHY5L-IIm as shooting camera. I had to try following manually the moon, since I obviously had no motorized tracking.
I had to use the 130mm scope instead of my main 8″ scope because of the shorter focal length: this way I could shoot almost the whole moon, so I could be sure that I didn’t miss the ISS.

Spring is back, and here in Milan we finally had a few days (and nights) of very nice weather.

I also bought a new lightweight battery for my HEQ5 mount, instead of the usual heavy car battery I’ve been using until now, so I took a minimal setup and placed myself in a local park.

Seeing wasn’t perfect, but it was fine enough to shoot a few nice details of an almost full moon.

More importantly, Jupiter was at opposition a few weeks ago, so it’s still in a very favourable position.

Satellites in order, from left: Io, Europa, Ganimede

All these shots were done using my own Planetary Imager.
Image processing was done using Autostakkert (stacking), Registax (wavelets), and GIMP (post processing).

Another couple of high resolution images, taken on the Appennines, with quite a lucky seeing.
Jupiter is now rising earlier, and it was a welcome preview to the observing night.

Firstly I tried shooting on prime focus, using small magnification, and then I used a 2.5 barlow lens. The prime focus shooting should have been just a test, but it proved to be the better one, as I had troubles focusing with the barlow lens (we were already in “night” mode, and I had to darken a lot my monitor, so focusing was really difficult).

This is the prime focus shooting elaboration.

Red spot visible

Saturn is starting to rise earlier, and around 4am is starting to be fairly hight for a few shots.

Since we already finished observing I could remove my notebook darkening panel, and focus quite better with the 2.5x barlow.

A first glimpse on Saturn, waiiting for the next opposition. Seeing was very good.

It was also a very satisfying deep sky stargazing night (which was actually the main purpouse of our trip to the Appennines).

Spring constellations enable us to go really “deep”, with very far and suggestive galaxy clusters.

Another shooting, much improved in quality compared to the previous ones: Jupiter bands are very well defined, rich of details, much more compared to the images of fifteen days ago: probably both because of the better seeing, and of the removal of the IR-pass filter, replaced with a more classical IR-Block, gathering much more light.

The “guest” of the title is the dark dot almost at the center of the planet: it’s not an image artifact, but it’s the shadow of the Io satellite projected on the planet. Basically, a solar eclipse on Jupiter.

The satellite itself is not visible on the picture, submerged in the planet disk. The other two satellites are, from closest to farthest, Europa e Ganimede.

Notice: this article is currently available in italian only.
I will translate it soon. You may contact me via comments if you want me to “prioritize” this article first.

Per una serie di vicissitudini (e per il maltempo che l’ha fatta da padrone) non ho potuto osservare molto Giove, in opposizione proprio nei prossimi giorni, e quindi nel periodo di migliore osservabilità.

Ieri sera comunque sono riuscito ad effettuare qualche osservazione e qualche ripresa, approfittando di un seeing stranamente non cattivo come solitamente da casa mia: purtroppo non ho balconi o terrazzi, e mi tocca riprendere ed osservare dalla finestra aperta, cosa che alza di parecchio la turbolenza per il continuo passaggio d’aria tra interno ed esterno.

Jupiter shot from home, average/bad seeing conditions (but luckly not so bad), quite low on the horizon (less than 20°).

Infrared filter to block most of the atmospheric turbulence.

In visuale era piuttosto evidente la Grande Macchia Rossa, che nelle riprese invece sembra quasi invisibile. Non è infatti il globulo scuro che si vede nella banda in alto a sinistra. Questo perchè la ripresa è stata effettuata nel vicino infrarosso e non nel visuale, per ridurre l’interferenza atmosferica, quindi i dettagli visibili nella ripresa sono un po’ diversi da quelli che si vedono ad occhio nudo.

Si vedono molto bene anche due dei satelliti galileiani, Io ed Europa.

Ripresa effettuata al fuoco diretto di un Meade ACF 8″, 2000mm di focale, con filtro IR “Planet IR Pro 807“, camera QHY5II-L. Sommati circa 800 frames (di 2000 totali).

Aggiornamento, 02/02/2015
Giusto una manciata di giorni dopo ho potuto ripetere il tentativo, con una messa a fuoco un po’ più fortunata.
Non è visibile la macchia rossa, in questo caso, ma sono riuscito a tenere nel campo tutti e quattro i satelliti galileiani.

A shot at the moon taken in a last quarter evening.

It’s a mosaic of 78 pictures, each of them stacked from 300 frames of 500. Images were taken at primary focus of my Meade ACF 8″ (2000 mm focal length), using a QHY5II-L mono.

Composite shot of 78 images.

For each image I stacked 300 frames (out of 500).

Very poor seeing (lots of turbulence, since I shot it through an open window).

Seeing was a bit too bad (I have to shoot from my window, since I don’t have a garden, which can make turbulence even worse).

Even if it’s not a perfect result I’m pretty satisfied: given the conditions lots of details are visible, and it also look quite good.
I hope to be able to shoot something even better soon!

Notice: this article is currently available in italian only.
I will translate it soon. You may contact me via comments if you want me to “prioritize” this article first.

Altre riprese delle macchie solari, in una giornata in cui la nostra stella era particolarmente ricca di dettagli.
In questo caso, essendoci parecchie macchie a fare da punti di riferimento, sono riuscito a fare un buon numero di riprese sovrapponibili per creare un mosaico (purtroppo non completo).

Composition of multiple videos, using 400 frames from each one (out of 1000)

Sono circa una decina di immagini da 400 frames ciascuna (su 1000 totali).
L’elaborazione è stata fatta sempre con registax, l’unione del mosaico con Hugin.

Notice: this article is currently available in italian only.
I will translate it soon. You may contact me via comments if you want me to “prioritize” this article first.

Dopo aver collimato un po’ meglio il telescopio, ho approfittato di una mattinata con un seeing tutto sommato accettabile per effettuare altre riprese del sole. Domenica 8 giugno il sole si mostrava particolarmente ricco, con un gruppo di macchie in particolare molto vicino, proprio al centro dell’astro, come mostrato dalla ripresa della sonda SOHO.

I gruppi da me ripresi sono il 2080-2085, molto estesi, e il 2082. Qui le riprese: