Astronomy Portal

ℍ𝕔𝕊: Recreational monocosm, Tetration Portal, Factorial Portal

WIP

Portal for (relatively) important things about or very closely related to astronomy with oversimplified descriptions.

Astronomical objects by colour

Tables of astronomical objects by colour index.

• Colour indices of minor planets
• Colour indices of moons
• Colour indices of planets
• Colour indices of brown dwarfs
• Colour indices of stars

Stereographic projection of Earth's night sky

Stereographic projection of the night sky which is essentially performing Riemann sphere rotating Möbius transformations on specific points on the complex line to be treated as stars. Ongoing work in progress project since 2020. Includes planets, the moon, Sun, and Pluto whose positions come from data used for the Desmos graphs for the Solar system.

Stereographic projection of Earth's night sky

Progress regarding additions of all main stars of given constellation

	Ant									Cnc
		CMi			Cas
						Cru
				Ori
					UMa	UMi				Vol

Solar system

Graphs of a to-scale Solar System. Data comes from here.

Heliocentric Solar System (top view)

Heliocentric Solar System (side view 1)

Heliocentric Solar System (side view 2)

Geocentric Solar System (top view)

Geocentric Solar System (side view 1)

Geocentric Solar System (side view 2)

Navbox used for pages on objects in the Solar System.

Object		Inner Solar System				Asteroid belt		Outer Solar System				Kuiper Belt							Scattered Disc			Extended Scattered Disc-Oort Cloud
Star	The Sun														-
Planet Satellite		Mercury	Venus	Earth The Moon	Mars Phobos Deimos			Jupiter Io Europa Ganymede Callisto 76 more	Saturn Mimas Enceladus Tethys Dione Rhea Titan Iapetus 76 more	Uranus Miranda Ariel Umbriel Titania Oberon 22 more	Neptune Triton 13 more
Minor planet Asteroid Dwarf planet Satellite Centaur Comet						Vesta Pallas Hygiea	Ceres			Chiron Chariklo Comet Halley		Pluto Charon 4 more	Orcus Vanth	Salacia Actaea	2002 MS4	Haumea Namaka Hi'iaka	Quaoar Weywot	Makemake S/2015 (136472) 1	Gonggong Xiangliu Gǃkúnǁʼhòmdímà	Eris Dysnomia	Comet Hale-Bopp	Sedna

Temperature and main-sequence stars

Temperature to main-sequence star function

Stellar luminosity, temperature, and radius

Hertzsprung–Russell diagram

Stellar luminosity, temperature, and radius

Planck's law

Planck's law

History of the largest known star

History of the top position on the Wikipedia article 'List of largest known stars'".

Stellar classification

Class O star

Class B star

Class A star

Class F star

Class G star

Class K star

Class M star

Class L star

Class T star

Class Y star

Stellar class UBOX files

• Google Drive folder: https://drive.google.com/drive/folders/1aAw9QIlRc-E1eJfM09d7ydiYwj1PHiSa
  • O: https://drive.google.com/drive/folders/1GK0T-nnVcT8wDO_mVdeadoXU-wbGcuj0
  • B: https://drive.google.com/drive/folders/1BbKJf6YwJrQFzmN8PlYStwVYIB_YuH3R
  • A: https://drive.google.com/drive/folders/1qok9pCx08rp9vSIm1ToHdM7J3gYj6L3M
  • F: https://drive.google.com/drive/folders/11S7Y2RlP-TN9NPlN2cGEt1UIvT3dUL7w
  • G: https://drive.google.com/drive/folders/1OAuFaqyX4xF2WxPN5C7G616IWvenRMKq
  • K: https://drive.google.com/drive/folders/121uk_zYqcpJCkDHAg6HUEQZ3_ihMFcM5
  • M: https://drive.google.com/drive/folders/1BdoxszM8bPixSrZ0WDu7kNKSe1_Ser6U
  • L: https://drive.google.com/drive/folders/11aKJm1kPw8rVvlnrOvFYFg2MmcUaPqr7
  • T: https://drive.google.com/drive/folders/1--EbbeZaQ6rnXoSvAsi_bMpXcdfbjofw
  • Y: https://drive.google.com/drive/folders/1W6JnPEp90JjYg2EnG0tup-rkR0H9W7gK

Stellar evolution

Evolution of stars of various masses

Evolution of stars of various masses (stages labeled)

Evolution of a 0.04 M_⊙ T dwarf, a 0.08 M_⊙ L dwarf, and a 0.14 M_⊙ M dwarf.

Evolution of a 0.80 M_⊙ K-type main sequence, a 1.00 M_⊙ G-type main-sequence, a 1.50 M_⊙ F-type main-sequence, a 2.00 M_⊙ A-type main-sequence, and a 5.00 M_⊙ B-type main-sequence.

Evolution of a 10.0 M_⊙ B-type main-sequence, an 18.0 M_⊙ O-type main sequence, and a 36.0 M_⊙ O-type main sequence.

Categories

• Physical cosmology
• Astronomy
• Galaxy
• Stellar Remnants
• Stars
• True Stars
• Brown Dwarfs
• Planemo
• Planet
• Dwarf Planet
• Minor Planet
• Centaur
• Asteroid
• Comet

LED and Laser post

LEDs

• 940 nm Infrared
• 660 nm Red
• 630 nm Orange
• 590 nm Yellow
• 574 nm Green-Yellow
• 525 nm Green
• 505 nm Cyan-Green
• 490 nm Cyan-Green
• 470 nm Blue
• 460 nm Blue
• 445 nm Blue
• 405 nm Violet
• 395 nm Violet
• 380 nm Ultraviolet-Violet
• 365 nm Ultraviolet
• White
• Warm White

Lasers

• 980 nm Infrared
• 808 nm Infrared
• 650 nm Red
• 635 nm Red
• 532 nm Green
• 515 nm Green
• 488 nm Cyan
• 450 nm Blue
• 405 nm Violet

Reference light spectrum renders

Rendered spectra of stellar classes

• Element emission and absorption spectra
• Black bodies
• Supergiants
• Bright giants
• Giants
• Subgiants
• Main sequences

May 15-16, 2022 Lunar Eclipse

• Drive: -
  • Best pictures:
  • Total Eclipse (3:29-4:53 UTC): -
  • Partial Eclipse (2:27-3:29 UTC): -
  • Penumbral Eclipse (1:32-2:27 UTC): -
  • Red foxes: -

Tools

• "Camera 1" (LQ Foxes, LQ Partial, LQ Total)
• "Camera 2" (HQ Foxes, HQ Partial, LQ Total)
• "Camera 3" (LQ Foxes, HQ Penumbral, HQ Partial, LQ Total)
• "Camera 4" (HQ Foxes, LQ Partial LQ Total)
• "Camera 5" (LQ Foxes, LQ Partial)
• 70mm lens telescope
• 1.25" 10mm lens eyepiece (damaged), used in conjunction with "Camera 3"

July 2022 Observations

Italics indicate things that were observed through the telescope but are not visible through photographs while bold observed things are visible in photographs.

July 2022 Observation Drive: https://drive.google.com/drive/u/0/folders/1ZgvwMsq_nvQK2rxhal3H_ZPVcfgT_Sp0

• July 5, 2022 Drive (Cam 2, 3)
  • Waxing Crescent Moon (Earthshine, Cam 2, 3)
  • Saturn (Rings, Titan, Cam 3)
  • Altair (Cam 3)
  • Arcturus (HD 125751, HD 125771, HD 125450, CN Boötis, HD 124772, HD 125040, Cam 3)
  • Jupiter (Europa, Io, Ganymede, Callisto, Cam 3)
  • Mars (Cam 3)
  • Venus (Cam 3)
• July 9, 2022 Drive (Cam 2, 3)
  • Waxing Gibbous Moon (Cam 2)
  • Saturn (Rings, Titan, Cam 3)
  • Jupiter (Europa, Ganymede, Callisto, Cam 3)
  • Mars (Cam 3)
  • Vega (Cam 3)
  • Polaris (HD 5914, Cam 3)
  • Venus (Cam 3)
• July 10, 2022 Drive (Cam 1, 2, 3)
  • Arcturus (HD 125751, HD 125771, HD 125450, CN Boötis, HD 124772, HD 125040, Cam 3)
  • Mizar and Alcor (HD 116798, Cam 3)
  • Alkaid (HD 120581, HD 120405, HD 119583, Cam 3)
  • Antares (HD 148760, Cam 3)
  • Waxing Gibbous Moon (Cam 2, 3)
  • Polaris (HD 5914, Cam 3)
  • Mirach (HD 6469, HD 6554, HD 6812 Cam 3)
  • Vega (Cam 3)
  • Epsilon Lyrae (HD 173525, HD 173631, Cam 3)
  • Saturn (Rings, Titan, Cam 2, 3)
  • Jupiter (Ganymede, Callisto, Io, Europa, Cam 3)
  • Mars (Cam 3)
  • Capella (12 Aurigae, HD 34190, Cam 3)
  • The Pleiades (Asterope, Taygeta, Maia, Celaeno, Electra, Alcyone, Merope, Cam 3)
  • Deneb (HD 197488, HD 197036, HD 198237, Cam 3)
  • Aldebaran (Cam 1)
  • Venus (Cam 1)
• July 13, 2022 Full Moon Drive (Cam 3)

Tools

Filter transmission curves of astronomical filters #29 Dark Red, #25 Red, #21 Orange, #12 Deep Yellow filter, #56 Light Green, #58 Green, #82A Light Blue, #80A Blue, #47 Blue, ZWB3 (Ultra)violet, and ZWB2 (Ultra)violet.

• "Camera 1"
• "Camera 2"
• "Camera 3"
• 70mm lens telescope
• 1.25" 4mm lens eyepiece
• 1.25" 6mm lens eyepiece
• 1.25" 8mm lens eyepiece
• 1.25" 10mm lens eyepiece (damaged)
• 1.25" 13mm lens eyepiece
• 1.25" 17mm lens eyepiece
• 1.25" 20mm lens eyepiece
• 1.25" 32mm lens eyepiece
• 1.25" 2X Barlow lens
• ND 0.9 Moon filter
• #25 "Red" filter
• #21 "Orange" filter
• #12 "Deep Yellow" filter
• #56 "Light Green" filter
• #58 "Green" filter
• #80A "Blue" filter
• #47 "Blue" filter

August 2022 Observations

August 2022 Observation Drive:

• August 13, 2022 Sun Drive (Sunspots, Cam 3)

Tools

• "Camera 3"
• 70mm lens telescope
• 1.25" 17mm lens eyepiece
• 1.25" 32mm lens eyepiece
• #25 "Red" filter
• #21 "Orange" filter
• #12 "Deep Yellow" filter
• #56 "Light Green" filter
• #58 "Green" filter
• #80A "Blue" filter
• #47 "Blue" filter
• 1.25" Solar filter
• 60-90mm Solar filter