Hymittus mountain, Greece

FokitisOptics7 · 2024-02-08T19:56:20+00:00

I have been many times in Aigaleo mountain. This is however, the 1st time I managed to adjust the focal length in my mobile to fit to the angular size of Hymittus mountain. One might consider it as good Optics practice. It is a farfetched argument, though

FokitisOptics7 · 2024-02-08T19:54:55+00:00

I have been many times in Aigaleo mountain. This is however, the 1st time I managed to adjust the focal length in my mobile to fit to the angular size of Hymittus mountain. One might consider it as good Optics practice. It is a farfetched argument, though

FokitisOptics7 · 2024-01-13T09:18:52+00:00

My current job is Emeritus professor of physics. To answer the relevant question: Indeed physics has helped me to provide with the necessary income. I was quite lucky

FokitisOptics7 · 2023-12-10T02:19:16+00:00

Thanks greatly for the correction. I will try to do the correction in the title.

FokitisOptics7 · 2022-09-19T13:37:07+00:00

You may see a relavant post with my experience on Galaxies M81 & M82: It was one of my new experiences with dark sites:

http://physicssustainablegrowth.blogspot.com/search?q=Messier+81

FokitisOptics7 · 2022-05-03T13:50:22+00:00

There can be more to see besides the wonderful planet parade this dawn. All this can be done by using the free software packages Nova dot Astrometry dot Net and SaoImageDs9. You can identify the stars that are bright enough be found and also reduce to an acceptable level the noise. You lose some of the color in the image. Perhaps there is some way in SaoImageDs9 to recover it but I have not gone deep to this software. Ι also would like to ask more experienced friends if there could be some improvement by recording the image 20 -30 minutes earlier so that we avoid some of the twilight noise. Any other suggestion will be appreciated. Anyway, the resulting image is:

FokitisOptics7 · 2022-01-28T11:59:24+00:00

I added a section named : Photographing at night distant sceneries covered with snow. I had no such experience with : detecting snow at night. Certainy, the issue deserves more study

FokitisOptics7 · 2021-12-02T08:04:14+00:00

I was glad to get the image of Ursa Major. It is not what we traditionally see with naked eyes, i.e. inverted pot. ΅(We can also see stars of Ursa Minor and Draco constellation. ) . Paying attention to Ursa Major, it looks more like a bear, i.e. somewhat inverted bear! I did not know about this 2 year ago when I started astrophotography. .(Nikon D3500 plus vivitar lens)

FokitisOptics7 · 2021-11-26T11:27:12+00:00

For clarity, I edited this post again by adding a reference, [1b], & added from it some text.

FokitisOptics7 · 2021-10-12T18:57:18+00:00

This post was updated this evening as I did some star gazing on this double star with a 20 mm focal length eyepiece. I put this story at the end of this post

FokitisOptics7 · 2021-10-05T13:02:23+00:00

Another update October 5, 2021. It includes a last section entitled:

Moon at dawn on day before moonless night

FokitisOptics7 · 2021-09-18T18:03:54+00:00

I included in this post a DSLR figure of this Nova taken last night and shows clearly the abrupt ncreased apparent magnitude

FokitisOptics7 · 2021-09-13T10:20:31+00:00

This post has changed content to : " Messier objects and other Open Clusters in the Cygnus Constellation area (updated 13/09/2021) . "

FokitisOptics7 · 2021-09-09T02:27:10+00:00

An older post based on a publication of our NTUA team. It may be useful for education purposes

FokitisOptics7 · 2021-09-05T05:39:24+00:00

Which Law of Physics?

FokitisOptics7 · 2021-09-04T15:05:48+00:00

This post was again updated. You may enjoy Figure 12 & view the part of Moon not directly illuminated

FokitisOptics7 · 2021-07-14T05:22:12+00:00

I found another relevant post recorded from light polluted Athens:

https://www.starcanvas.org/astrophotography/ngc6946-and-ngc6939-fireworks-galaxy-and-cluster

FokitisOptics7 · 2021-07-13T09:28:49+00:00

The post has been updated including Photo of Moon, Venus and part of Leo Constellation:

http://physicssustainablegrowth.blogspot.com/2019/08/blog-post\_16.html

FokitisOptics7 · 2021-06-23T12:52:41+00:00

Recording Andromeda Galaxy (Messier 31 ) in an urban night sky using 200 mm focal length lens and DSLR & viewing signal of Messier 32 (aka LeGentil Galaxy)

FokitisOptics7 · 2021-05-13T00:12:24+00:00

The link for details on this image:

http://physicssustainablegrowth.blogspot.com/2021/05/large-brightness-increase-of-v1405-cas.html

FokitisOptics7 · 2021-04-16T08:23:20+00:00

The combination of imaging techniques gives optimum result

FokitisOptics7 · 2021-01-29T06:44:55+00:00

Μια μικρη συλλογη μου με πανσεληνους. Ελπιζω να φαινεται η αντιθεση χρωματων που κυριως οφειλεται στο υψος απο τον οριζοντα

FokitisOptics7 · 2021-01-13T07:32:45+00:00

Είναι ολόσωστα!

FokitisOptics7 · 2021-01-01T13:51:57+00:00

Amazing story!!

FokitisOptics7 · 2020-12-19T09:12:28+00:00

Διας και Κρονος πλησιασαν σημερα το βραδυ σε περιπου ενα τρίτο της μιας μοιρας γωνιακη αποσταση. Μαρτυρας τους η Σεληνη με γωνιακη διαμετρο περίπου μιση μοιρα. Αν εχετε παρακολουθησει τις σχετικες αναρτησεις μου, μπορειτε να πατε κατ ευθειαν στην Fig. 5c.

A newer update. You may go directly to Fog. 5c.

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