Leo Singer's following
- Alex Nitzahnitz
- Alex L. Urbanalurban
- Ben Farrbfarr
- Casey Lawcaseyjlaw
- Constantine Evanscgevans
- Cameron Hummelschummels
- Carl Hastercjhaster
- Leo C. Steinduetosymmetry
- Eric Bellmebellm
- Will Meierjurgen Farrfarr
- Dr. Hunter Gabbardhagabbar
- Eric Hivonhivon
- Igor Andreoniigorandreoni
- John Veitchjohnveitch
- Larry R Pricelrp
- mcmiller2
- General Coordinates Networknasa-gcn
- Nic Smithnicolassmith
- Philip Cowperthwaitepcowpert
- Reed Essickreedessick
- rymagee
- shreyasahasram08shreyasahasram08
- Javed Ranaskjavedrana
- Adam Mercerskymoo
- ssachdev12
- Stefan Countrymanstefco
- Tito Dal Cantontitodalcanton
- Salvatore Vitalevitale82
- WINTERwinter-telescope
- Andrea Zoncazonca