New York · Nonprofit
AMATEUR OBSERVERS SOCIETY OF NEW YORK INC
AMATEUR OBSERVERS SOCIETY OF NEW YORK INC (New York) receives grants from 2 organizations whose IRS filings report $13,220 to it, the largest being THE WEAKLEY FOUNDATION TRUST ($12,500). 1 of them have funded it in more than one year.
- Revenue FY2025
- $25k
- Funders on record
- 2
- Grants received
- $13k
- Net assets
- $40k
What Amateur Observers Society of New York Inc does
Mission
Encouraging interest in Astronomy
As stated on its FY2025 Form 990-EZ.
Programs
Astronomy Day at Cradle of Aviation Museum; hundreds of people visited the museum and many participated in events run by the club, including hands-on astronomy workshops for kids, astronomy lectures for adults and kids, portable digital planetarium presentations and safe solar telescope observing.
$393 spent36% of program spendingStars on Sunday - volunteering club members man telescopes on the roof of the Hofstra Univ Science bldg for public telescope viewing. Program begins with a presentation about the sky. Attendance is limited to 150 per event and often surpassed.
$70 spent6% of program spendingAOS Observatory at Custer Institute in Southold - Stargazing every clear Saturday evening, bringing the night sky objects into view for the public using digital means to project images captured by a C14 telescope within a 8-foot dome to a monitor outside of dome. Attend: 10-200
$618 spent57% of program spending
The 3 programs described on its FY2025 Form 990-EZ. Program spending in total: $1,081.
The organization over time
Each line starts at 100 in 2021, so what you read is the shape rather than the size: 150 means half as much again as 2021, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $24k to $40k (+67%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
63% of AMATEUR OBSERVERS SOCIETY OF NEW YORK INC’s revenue is contributions — about as donation-reliant as the typical peer (89% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 5 reported years ran a deficit.
Who funds it, year by year
2020 → 2023: the base held at 1 funder, grant income rose $136 → $149.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 5% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of AMATEUR OBSERVERS SOCIETY OF NEW YORK INC’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
AMATEUR OBSERVERS SOCIETY OF NEW YORK INC leans on a few funders — its largest provides 95% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2020 100% · 2021 100% · 2022 100% · 2023 100% — broadly stable.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
100% of AMATEUR OBSERVERS SOCIETY OF NEW YORK INC's grant income comes from New York funders.
Funder states come from each funder’s own filing. $720 arriving through sponsors registered in 1 state is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
AMATEUR OBSERVERS SOCIETY OF NEW YORK INC runs a healthier operating margin than three-quarters of the 479 science & tech nonprofits its size.
this organization peer median middle 50% of peers· 479 science & tech nonprofits under $100k, FY2025
Organizations like AMATEUR OBSERVERS SOCIETY OF NEW YORK INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Public support
100%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for AMATEUR OBSERVERS SOCIETY OF NEW YORK INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds AMATEUR OBSERVERS SOCIETY OF NEW YORK INC?
- AMATEUR OBSERVERS SOCIETY OF NEW YORK INC (New York) receives grants from 2 organizations whose IRS filings report $13,220 to it, the largest being THE WEAKLEY FOUNDATION TRUST ($12,500). 1 of them have funded it in more than one year.
- How many funders does AMATEUR OBSERVERS SOCIETY OF NEW YORK INC have?
- IRS filings report 2 organizations giving $13,220 in grants to AMATEUR OBSERVERS SOCIETY OF NEW YORK INC, 1 of which have funded it in more than one year.
- Who is the largest funder of AMATEUR OBSERVERS SOCIETY OF NEW YORK INC?
- THE WEAKLEY FOUNDATION TRUST is the largest funder on record, with $12,500 in grants. The full list of funders is on this page.
- How can an organization like AMATEUR OBSERVERS SOCIETY OF NEW YORK INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Amateur Observers Society of New York →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2021–2025), and the filings of 2 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing