Gonariu

22 minutes ago, ollypenrice said:

Ho la versione 150 marchiata Bresser. Anche se non è male, è, come il tuo, in pensione. Forse quando i nostri nipoti saranno abbastanza grandi...

Olly

Is it a 150/1200 achromatic? I have read some nice reviews on the achromats 150/1200.

In 1999 I bought the Konusuper 120 with which in 2003 I had made some beautiful observations of Mars even if for something I was not convinced (a slight lateral smear observing the planets, especially Venus). A couple of years ago I noticed a chip on the edge of the achromatic doublet of a few centimeters (less than half an inch), so I put a 90 mm black cardboard diaphragm in it. In doing so it has become fantastic, excellent views of the moon at 333X and of Mars in the opposition two years ago at 200X-333X. I have never had nor have I ever tried an apochromat (or ED apochromat), last year I preferred to buy the Nexstar 8 SE, an instrument that ultimately shows more for the same cost. It may be that one day I will be overcome by the temptation of apochromats, perhaps a Takahashi, now it would be wasted as I am little more than a "curious about the sky".

Nice optics, and the tripod feels sturdy enough.

A good Barlow 2X apochromat would also fit.

Last night I pulled out the C8 because I wanted to test the SV 305 on the moon. I let it "acclimatize" (for fussiness, when at 8-9 in the evening there are still about 30 C this was certainly superfluous, but to be on the safe side .....), while I am waiting I take out the vintage achromatic 60/900 which I bought used last month which at 150X with an OR6 gives me a good view of our satellite; in particular Theophilus, Cyrillus and Catharina are very beautiful. Even with the C8 you have a very beautiful vision but I do not dwell much, I connect the planetary chamber to it, but not even the shadow of the Moon. I then use the Konus Vista (achromatic 80/400) with which I can visualize the Moon on the computer screen, thanks to the much shorter focal length; to get a better and bigger view I am putting a Celestron Barlow 2X found in a case. I correct at least a little the green cast given by the SV 305, the movie that comes out is not great but, being the first experience, I am happy with it and I go to bed satisfied at half past midnight, I place the electric fan in front of it as the my room felt a little too hot (normal, with a maximum of + 40.9 C). I would have stayed on the terrace again, at least until 2 to see more as the moon had set, but this morning I had to be at school at 8 for the state exams.

Sure, by selling the boat we get the money for an apochromat that is transportable.
I also like to see the sun, when I start I make a drawing of it in a special notebook, only now we go roast here, shorts, slippers and T-shirts are a must!

Thanks, I reciprocate the greetings! The covid broke everyone's soul for two good years, I really hope for me and everyone in normal times.

I have to decide to get up early to start seeing the planets, for Mars then waiting for the opposition at the beginning of December is both a bit far away and there will be a lot of cold as opposed to now which is making a low of 20 C abundant. Since this year's opposition is less favorable than that of 2020 (about 17 "instead of 22" .6) it is better to do some training first (both visually and with the planetary camera I bought, the SV 305).
For mosquitoes it is a common problem ... for about ten years if I do not spray the Autan, in the summer I am devoured alive by mosquitoes & papatacci!

Yes, in the summer they are seen among the best DSOs of the year, many of them in Sagittarius. Tonight I think I'll put myself after dinner to see something, I won't wait for the astronomical twilight (around 11pm) because after dinner I get a deadly sleep, a few weeks ago I was about to fall asleep on the telescope (a small achromatic 80/400 on a good photographic tripod) with the risk of combining damage .....

I didn't know that weed made it easier to dampen vibrations. I observe from a large terrace here at home which is certainly not ideal as it is well radiated by the sun during the day. that I bought back a C8 (the Nexstar 8 ) the better.

Nice picture, I noticed that looking at the Sun with a W58 green filter you have an excellent contrast. I look at the Sun with satisfaction with a small achromatic 80/400 at the hottest hours with about 35 C, but you can stand it.

It would bother me very much that during the summer, which is the period in which one can enjoy astronomical observation without the cold or with milder temperatures like you in the UK, to have problems with twilight or white nights. The winter cold sometimes dissuades me from putting out the telescope as I have a mild chronic pharyngitis and, in these times, even a simple sore throat (which sometimes comes to me) can be a symptom of covid (in normal times not me it mattered nothing). Remarkable is the commitment and tenacity with which you exploit even the least favorable situations with good results.

Beautiful photographs of the Moon and beautiful observation post, in particular the grass in the garden greatly decreases the heat radiation during the night of the heat received during the day.

Welcome to SGL; we Sardinians have a special bond with you Spaniards!

Happy Easter everyone !!!

As an astronomy book I use this: Title: Star by star. Author: Piero Bianucci. Publisher: Giunti. The text is in Italian, I don't know if it has been translated into English. As a book I like it very much, I use it to plan my deep-sky observations.

Too beautiful photographs, congratulations !!!

I looked at them today at Cagliari between 13.10 and 13.31 with a small achromatic 80/400 (Konus Vista - 80) equipped with a glass solar filter with full aperture at 50X (with a Vixen 8 - 24 zoom eyepiece. not so recent anymore, bought used by a friend). I also used a star diagonal mirror (otherwise you can't get into focus). The observation was conducted in full light. In the photograph I took with my mobile phone of the drawing (putting on the flash) the shadow of the leftmost spot did not come.

I thank everyone for the valuable advice; so far I have been a (almost) pure visualist, but for some time I have realized that to make contemplative observations of the Moon (I observe and search on a lunar map what I see at the telescope) the old Konus 60/700 achromatic refractor, bought in 1983 when I was a boy, was more than enough; a better telescope used only in this way is wasted. I think (and hope) that I will not have software problems as last year I got a second laptop, in fact the first one could fail and I would have had problems with distance learning (I'm a math and physics teacher).

8 hours ago, AstroMuni said:

Con quale telescopio pensi di usarli?

I bought a used Nexstar 8 SE with which I would like to do more serious things than the contemplative observations of the Moon & planets I have done so far.

I would like to start with the photography of the Moon, Sun and planets and I have seen these planetary cameras from Svbony, the SV 105, the SV 89 and the SV 305, what do you think? Has anyone tried them?

In fact, the Sun gave a show last month, also thanks to the good weather that around 10 December deigned to do after a month and a half of rain every day. Today at 13.53 (Italian time) with my achromatic 80/400 at 50X it was desolately empty; the new cycle seems to have been on alternating current for some time.

@Onikkinen. Your way to not get too cold is interesting, I will put it into practice and thus I will avoid decreasing or interrupting my astronomical observations in the bad season.
@Chefgage. In cervesia veritas! (= truth in beer!). Every now and then you need a nice beer !!!

1 hour ago, Ags said:

Se ti può consolare, il tempo non è stato certo migliore qui in Olanda. 

Ricordo che dieci anni fa si parlava di persone che parlavano del riscaldamento globale che rendeva il nord Europa più mediterraneo, ma in pratica tutta quell'evaporazione del mare significa che stiamo solo ricevendo più pioggia.

Yes, global warming. Here too there is a heat wave that for this period is not normal, here in Cagliari today I saw from the car thermometer that at 1 pm it was 20º (I have been here on holiday for the Christmas holidays since 28th); my sister told me she never had to turn on the gas heater this month. In the evening I went out to take the dog out for a walk, I saw that you could see some stars, the typical winter constellations, I'll try tomorrow night to see something from the balcony of the house with the telescope, Venus will be in poll position! Before going down to Cagliari I tried to see Venus a few times from the terrace of Orotelli but, besides observing the Sun since it stopped raining (from the end of October to the beginning of this month) I did nothing else because I caught the infection on the 5th with a few days of fever and I got used to staying at home in the heat with the pellet stove that brought me the temperature to 25 °, going to the terrace at dusk at 10 ° to see Venus or to close the terrace door I do not liked it so much. Once I put out the Nexstar 8 SE and in the meantime it acclimatized I looked at the planet with my achromatic 80/400, but then I put everything inside, I didn't like the cold and the "jail" to which I was forced to undergo because I was still positive, it made me fear that my fever might return. Never mind, I will recover from now on hoping that it does not make a winter that is too rainy as it was the second part of autumn and trusting that for some years now it has been having a "winter without winter", often in the winters spent in Orotelli I woke up in the night all sweaty and had to take off my pajama jacket! My father, who was from 1933, said that as a child he saw the ice candelabra attached to the roofs of the houses, they have been there for 18 years (I used to live in Cagliari) and I have never seen them. Of course, almost every winter it happens that at least once it makes a splash of snow, in Cagliari I literally saw it with binoculars when I was a boy: I climbed the hill of Monte Urpinu with my Konus 10X50 binoculars to see the Sarrabus mountains covered with snow when it was cold (a day with a maximum of 8º - 10º when I was a boy was cold for me, I'll make you smile… ....); with the subtropical climate of Cagliari snow is very rare.

On 21/12/2021 at 20:04, ONIKKINEN said:

Ho 9 sessioni e 16 ore di esposizione da fine aprile. Sembra che ci voglia un tipo speciale di pazzia per fare astronomia in Finlandia. Ma voi ragazzi potreste trovarvi ancora peggio, quindi mi prendo quello che posso ?

In fact, with the temperatures you have in Finland in the cold season, you need to have a lot of courage to go outside. If there are + 3° outside at Orotelli I do not have the courage to take out the telescope or I make a hit and run observation (I must say that I have a slight chronic pharyngitis that does not encourage me to go out on too cold nights, at least according to the concept of "cold" that we have here in Sardinia). In Cagliari which is on the sea and has a subtropical climate "I dare" more .....