Showing posts with label Moon Corona. Show all posts
Showing posts with label Moon Corona. Show all posts

Wednesday, November 20, 2019

Varia

*   O coroana lunara vazuta in seara zilei de Miercuri 9 octombrie a.c. ,ora 21:05 ODV.



*   Luni 11 Noiembrie am urmarit tranzitul planetei Mercur peste discul solar timp de 40 de minute.
Am folosit o masca solara extraaxiala cu filtru solar Baader avand apertura de 60mm, pe dobsonianul de 200mm.
Deci instrumentul efectiv folosit a avut un raport focal de F/20,5.


Filtrul solar a fost doar provizoriu adaptat la dobsonianul de 200mm ,el provine de la prietenul meu Silviu aka ''zoth'' si are un diametru de 110mm.
Dupa finalizarea reconditionarii dobsonianului ''Ratusca cea urata'' de 125mm F/6.9 , voi folosi intreaga apertura de 110mm a filtrului solar deci voi utiliza un telescop solar de F/7,8.

Inainte de tranzitul lui Mercur ,cerul a fost variabil dar acceptabil pentru observatii.
Daca ar fi ramas asa,conditiile mi-ar fi permis sa fac si cateva poze cu ''sapuniera'' Coolpix S3300.
Discul solar se vedea lipsit de orice detalii.



Pe masura ce s-a apropiat momentul primului contact,cerul a devenit tot mai noros si exista si ceata atmosferica.
Am observat la 49x / Plossl Sirius 25mm , nu am vazut contactele C1 si C2.
Cand discul lui Mercur a devenit vizibil,era deja in interiorul discului solar cu patru sau cinci diametre proprii.
Am reusit de doua ori ,pret cam de cate un minut de fiecare data, sa urmaresc planeta Mercur la 137x /Plossl Revelation 9mm.
Norii si coronamentul arborilor m-au impiedicat sa continui observatiile dupa ora 15:10 ... asa ca ''Elvis left the building'' !
Colegii din astroclub au avut succes mai mare :


*   Luni 18 Noiembrie ,la ora 5:14 am zarit un halou lunar slab condensat cand am servit-o pe Tzitza cu prima gustarica a zilei.
Vizual,haloul a fost mult mai evident decat ceea ce a reusit sa fotografieze Coolpix S3300.



*   Luneta ''zoth'' 60x828mm folosita Joi 21 Noiembrie a.c.
Cerul parea promitator dar norii,mari specialisti in hartuirea astronomilor amatori, au venit imediat ce am instalat luneta  pentru observatii.
Inainte ca ei sa acopere tot cerul am apucat sa arunc o privire spre minunatele Pleiade si sa rezolv Almach/Gamma And.
In Auriga am reusit sa gasesc doar roiul M37 care s-a vazut foarte palid.
Spre orizontul estic cerul parea mai curat, am reusit sa vad Sigma Ori ca tripla ,sa separ Mintaka si sa vad trei din stelele Trapezului lui Orion.
Din Marea Nebuloasa din Orion / M42-43 se vedea o usoara ceata slab luminoasa dar roiul stelar deschis rarefiat NGC 1981 s-a vazut binisor.
Am incheiat prin rezolvarea lui Polaris unde companionul era cam la limita de vizibilitate.

Apoi norii au inchis cerul si lumea a luat iar aspectul de hruba specific acestei ''iepoci'' globaliste.







Sunday, July 16, 2017

Mix , observatii si ATM / Miscellaneous , observations and ATM

10 April 2017: I observed  the Moon with the 90x600mm refractor  with  magnifications from 24x / Plossl 25mm to 100x / Baader 6mm.
I used Moon & Skyglow filter as well as colored ones : green, yellow, red and blue.
The best results I got were with  the red filter, by which, at 100x, I saw eight or nine ray-craters spread over the Moon's surface.
Remarkable is a radius starting from Tycho, crossing the entire moon to the North-West.
I attach a picture, generally unsuccessful, but in which you can see this amazing radius that "crosses" with all the forms of the lunar relief.

I took note of the position of eight of the ray-craters I remembered, last night I did not have the Moon map with me and I did not took notes.





10 Aprilie 2017 : Am observat Luna cu luneta de 90x600mm la mariri de la 24x/Plossl 25mm pana la 100x/orto Baader 6mm. 
Am folosit filtre ,atat Moon&Skyglow cat si colorate :verde ,galben,rosu si albastru. 
Cele mai bune rezultate le-am obtinut cu filtrul rosu , prin care , la 100x ,am vazut opt sau noua cratere cu raze ,raspandite pe suprafata Lunii. 
Remarcabila este o raza care pornind din Tycho ,strabate intreg discul selenar pana spre limbul nord-vestic. 
Atasez o poza ,in general nereusita dar in care se vede binisor aceasta raza uimitoare care strabate ''cu nepasare'' prin toate formele de relief selenar. 
Am notat pe poza pozitia a opt dintre craterele cu raze despre care mi-am amintit, aseara nu am avut harta selenara la mine si nu am luat notite.




The 90x600mm refractor , the 60x700mm refractor and Fujinon Mariner 7x50mm binocular.



2'' to 1.25'' reduction,University 12.5mm Ortho and Revelation 9mm Plossl.


''Circle T'' Kellner 9mm , orthoscopic 6mm ,Huygens 20mm ,Huygens 9mm and Huygens 6mm oculars.





LV 30mm/2'' ocular ,University 12.5mm Ortho and Revelation Astro 9mm Plossl .



Penelopa 1.5''  DIY pipe -mount , 60x700mm refractor and Lybar chair.


Jupiter Corona on 2 May 2017.







The status of my time tested 125mm F/7 Dobsonian didn't look good.
The worn out legs , ground board and merry-go-round of my 125mm F/7 Dobsonian.
Time for refurbishment !


New ground board with good legs , rubber armored.

The old helicoidal focuser have worn out threads.



Another focuser ,still helicoidal.



 Instead of the merry-go-round I choose teflon on LP record azimuthal bearing.




 


A new reinforcing ring for the primary mirror end.


Colimation is a must !


Ready for fight ,again!



Moon Corona 3 of May ,2017.
Pics taken with the Nikon Coolpix S3300 compact camera.











 Moon and Jupiter on 5-th of May 2017.













Crepuscular rays in the evening of 27 May 2017.





Work on my home-made 200mm F/6.16 Dobsonian called ''Toleascope''.
The optics -mirrors , oculars ( like Sirius 25mm and Televue Radian 6mm ),6x30mm  finder ,1.25'' colimation laser and the first Ravneberg open-tube mounting were provided by my friend Alin Tolea , a Mecena of Romanian amateur Astronomy.
I started modifications of the mounting to a solid tube ''circus canon'' type to be better adapted for Urban Astronomy.

The rocker , altitude bearings and Stellafane type ground board.


An ocular shelf under development.


Just a mock-up assembly!


The HC-2 ''Kineoptics'' focuser and DIY adapter.
The solid tube is rolled 0.5 mm galvanized steel sheet.


The sky is the limit !


Friday, January 6, 2017

Some more observations of December 2016/Alte observatii din Decembrie 2016

All visual observations were made with naked eyes and the Fujinon Mariner 7x50mm WPC-XL binocular.
                                                  


All pictures were taken  with Nikon  Coolpix S3300 compact camera mounted on modified Velbon tripod.
                                                   
The observations were suggested by  the weekly articles  ''This Week's Sky at a Glance'' of "Sky&Telescope'' :


Thank you !


And ''earthsky.org'' daily articles :


Thank you !






The Moon , Mars and Venus on 5  December 2016.
















A Moon Corona on December 8.

                                     

                                                                                                                                                                                                         






Another Moon Corona on December 11.

                                                                     











Planet Venus in the  constellation of Capricornus on December 27.








 Comet 45-P was not visible from my location  on the last day of  December 2016 , just many clouds and  the two days Moon with ashen light.