Showing posts with label sirius. Show all posts
Showing posts with label sirius. Show all posts

Thursday, April 7, 2022

Looking for Bright Stars for Celestron Nexstar 6SE Alignment

Brightest star in the Northern Hemisphere - Sirius

Looking for Bright Stars
for Celestron Nexstar 6SE Alignment
As a reminder, the following Messier lists are available on pages of Astroimaging. If you get a clear night, seven stars may become visible in and around the Orion Nebula, enough for Celestron's Two star Alignment. Run an experiment to see what happens.

Why are we looking for bright stars? Urban astronomy typically has severe light pollution. The largest cities also deal with air pollution and particulate matter suspension. This is conducive to the forming of upper atmospheric haze. Two nights ago, Venus was bright and visible. However, dimmer Mars and Saturn were not obvious and almost not visible. Blame it on several factors, air pollution, light pollution, haze, and planets that are far from opposition. This applies to large cities with populations of 3 million or more.

Main Messier List
https://otisastro.blogspot.com/2020/08/messier-object-list.html

Messier List by Constellation
https://otisastro.blogspot.com/2020/08/messier-objects-by-constellation.html

Messier Objects by Type
https://otisastro.blogspot.com/2020/08/messier-objects-by-type.html

Messier List by Magnitude
https://otisastro.blogspot.com/2020/08/messier-objects-by-magnitude.html

List of Supernova
https://otisastro.blogspot.com/2020/08/find-supernova.html

List of Bright Stars
https://otisastro.blogspot.com/2020/08/bright-stars.html

Other Interest
Top Ten Brightest Messier Objects
"Deep Sky for light polluted skies"

Object Catalogs - The Constellations
Map of the constellations
List of the constellations
Constellations in order of size

The Deep Sky
The Messier objects
Browse object catalogs
List of the 200 brightest open clusters
List of the 200 brightest globular clusters
List of the 200 brightest galaxies

Stars
List of the 200 brightest stars
List of the 200 closest stars

Your Sky - Solar System Objects

Planets
Comets
Asteroids

The Deep Sky
Visibility of the Constellations
Deep Sky Objects

Sky Diagrams
Diagram of objects in your sky
Rising and setting times
Altitude/time charts
------------
Find Messier Objects by Type

List of Other Objects

Messier Objects by Constellation

Supernovae in Messier Catalog Galaxies

Messier in Photos

Main Messier Object List

Messier Objects by Magnitude

Best Non-Messier Objects

Tuesday, November 24, 2020

Brightest Stars


Special Brightest Northern and Southern Stars Event
By a streak of good luck, I managed to see both the brightest star in the Northern Hemisphere in Canis Major and the brightest star in the southern constellation Carina at the same time.


I'm lucky to live in the middle, an area termed as the transition of tropical to subtropical near the equator in the Pacific Ocean, where I can simultaneously see both northern and southern hemisphere constellations.

The two stars, Sirius and Canopus respectively, were found and identified using a planetarium program - Safari - installed on the mini iPad. Then, a special iPhone Xs Max app MILKYCAM was used to take a confirming photo at the extremely fast ISO rating of 1,856. The single image was processed to remove noise grain and city core light pollution, using the app, PhotoScape X, and the iMac operating system. To the right of Canopus is a very tall lighted skyscraper on the horizon that spreads considerable light pollution in all directions. To the right is sky glow from downtown Taipei. The two star-like objects directly above it are red warning lights on the top of the massive crane boom arms being used to build the skyscraper. With the unaided eye, 25 stars were visible in the sky on this clear night. At the top right of the photo is the constellation Orion with the three belt stars clearly visible, along with the Great Orion Nebula. It was considered very lucky to see the southern star Canopus because farther south is obstructed by the horizon and buildings. The raw color photo is unprocessed and shows Canopus near the blazing new skyscraper. This photo shows the city lit by its own light pollution. As 22 photos were captured, it's possible to use other programs to minimize grain and noise by stacking images, for another project.

Photo Data
 CAM1 0X15 SEC SUM, 1224X1632, ISO1,856, RATE2 BIN 2 MILKYCAM 2.15, NOV 22 2020 00:54 LOCAL TIME